[grits] libgis -> grits: Update functions/types/etc



commit f383c18c9f85a1b439c6bfb2a27d652278ed019a
Author: Andy Spencer <andy753421 gmail com>
Date:   Sat Nov 20 07:45:58 2010 +0000

    libgis -> grits: Update functions/types/etc

 TODO                         |   12 +-
 docs/api/Makefile.am         |    2 +-
 docs/api/grits-demo.xml      |   12 +-
 docs/api/grits-docs.sgml     |   26 ++--
 examples/plugin/teapot.c     |   54 ++++----
 examples/plugin/teapot.h     |   26 ++--
 src/.vimrc                   |    2 +-
 src/data/grits-data.c        |    2 +-
 src/data/grits-data.h        |   28 ++--
 src/data/grits-http.c        |   74 +++++-----
 src/data/grits-http.h        |   20 ++--
 src/data/grits-wms.c         |   58 ++++----
 src/data/grits-wms.h         |   18 ++--
 src/grits-demo.c             |   32 +++---
 src/grits-opengl.c           |  152 +++++++++++-----------
 src/grits-opengl.h           |   32 +++---
 src/grits-plugin.c           |  172 ++++++++++++------------
 src/grits-plugin.h           |   68 +++++-----
 src/grits-prefs.c            |   60 +++++-----
 src/grits-prefs.h            |   60 +++++-----
 src/grits-test.c             |   30 ++--
 src/grits-util.c             |   18 ++--
 src/grits-util.h             |   22 ++--
 src/grits-viewer.c           |  298 +++++++++++++++++++++---------------------
 src/grits-viewer.h           |  131 +++++++++---------
 src/grits.h                  |    4 +-
 src/objects/grits-callback.c |   30 ++--
 src/objects/grits-callback.h |   42 +++---
 src/objects/grits-marker.c   |   50 ++++----
 src/objects/grits-marker.h   |   34 +++---
 src/objects/grits-object.c   |   25 ++--
 src/objects/grits-object.h   |   50 ++++----
 src/objects/grits-tile.c     |  128 +++++++++---------
 src/objects/grits-tile.h     |   82 ++++++------
 src/plugins/elev.c           |  121 +++++++++---------
 src/plugins/elev.h           |   34 +++---
 src/plugins/env.c            |   66 +++++-----
 src/plugins/env.h            |   32 +++---
 src/plugins/map.c            |  114 ++++++++--------
 src/plugins/map.h            |   34 +++---
 src/plugins/sat.c            |  112 ++++++++--------
 src/plugins/sat.h            |   34 +++---
 src/plugins/test.c           |   56 ++++----
 src/plugins/test.h           |   28 ++--
 src/roam.c                   |    4 +-
 src/roam.h                   |    2 +-
 src/tile-test.c              |   24 ++--
 47 files changed, 1256 insertions(+), 1259 deletions(-)
---
diff --git a/TODO b/TODO
index 8bc73a1..a634b2f 100644
--- a/TODO
+++ b/TODO
@@ -5,19 +5,19 @@ Miscellaneous
 - Organize examples and demo programs
 	- Add real examples do dist
 
-GisObject:
-  - Improve GisMarker
+GritsObject:
+  - Improve GritsMarker
   - Add min/max LOD
   mabye: ?
-    - Add linked list node to GisObject for add/remove
-    - Move rendering code to objects intead of GisOpenGL
+    - Add linked list node to GritsObject for add/remove
+    - Move rendering code to objects intead of GritsOpenGL
     	- How to work with non-opengl renders, do we care?
 
-GisTile:
+GritsTile:
   - Prioritize tile updates
   - Only updates visible tiles
   - Render correct tile resolution when zooming out
-  - Integrate with GisTile?
+  - Integrate with GritsTile?
   how:
     - Update tiles after each render
     - Use backfaces to only fetch rendered triangles for each tile
diff --git a/docs/api/Makefile.am b/docs/api/Makefile.am
index 79cf675..b19ba0b 100644
--- a/docs/api/Makefile.am
+++ b/docs/api/Makefile.am
@@ -2,7 +2,7 @@ AM_CPPFLAGS = $(SOUP_CFLAGS) $(GLIB_CFLAGS) $(GTK_CFLAGS)
 
 # Gtk docs
 GTKDOC_LIBS        = $(SOUP_LIBS) $(GLIB_LIBS) $(GTK_LIBS) \
-		     $(top_srcdir)/src/grits.la \
+		     $(top_srcdir)/src/libgrits.la \
 		     $(top_srcdir)/src/plugins/*.la
 DOC_MODULE         = grits
 DOC_SOURCE_DIR     = $(top_srcdir)/src/
diff --git a/docs/api/grits-demo.xml b/docs/api/grits-demo.xml
index 1f6cdce..9cc9a1e 100644
--- a/docs/api/grits-demo.xml
+++ b/docs/api/grits-demo.xml
@@ -1,22 +1,22 @@
-<refentry id="gis-demo">
+<refentry id="grits-demo">
 <refmeta>
-	<refentrytitle>gis-demo</refentrytitle>
+	<refentrytitle>grits-demo</refentrytitle>
 	<manvolnum>1</manvolnum>
 </refmeta>
 
 <refnamediv>
-	<refname>gis-demo</refname>
+	<refname>grits-demo</refname>
 	<refpurpose>Grits demonstration program</refpurpose>
 </refnamediv>
 
 <refsynopsisdiv>
 	<cmdsynopsis>
-		<command>gis-demo [GTK_OPTIONS]</command>
+		<command>grits-demo [GTK_OPTIONS]</command>
 	</cmdsynopsis>
 </refsynopsisdiv>
 
 <refsect1><title>Description</title>
-	<para><command>gis-demo</command> TODO (short description)</para>
+	<para><command>grits-demo</command> TODO (short description)</para>
 	<para>
 		TODO (long description)
 	</para>
@@ -25,7 +25,7 @@
 <refsect1><title>Environment</title>
 	<variablelist>
 		<varlistentry>
-			<term>GIS_PLUGIN_PATH</term>
+			<term>GRITS_PLUGIN_PATH</term>
 			<listitem><para>
 				Secondary path to use when searching for
 				plugins.
diff --git a/docs/api/grits-docs.sgml b/docs/api/grits-docs.sgml
index 4afe49f..805a787 100644
--- a/docs/api/grits-docs.sgml
+++ b/docs/api/grits-docs.sgml
@@ -8,30 +8,30 @@
 
 	<chapter>
 		<title>Core API</title>
-		<xi:include href="xml/gis-viewer.xml"/>
-		<xi:include href="xml/gis-opengl.xml"/>
-		<xi:include href="xml/gis-prefs.xml"/>
-		<xi:include href="xml/gis-util.xml"/>
+		<xi:include href="xml/grits-viewer.xml"/>
+		<xi:include href="xml/grits-opengl.xml"/>
+		<xi:include href="xml/grits-prefs.xml"/>
+		<xi:include href="xml/grits-util.xml"/>
 	</chapter>
 
 	<chapter>
 		<title>Data Access</title>
-		<xi:include href="xml/gis-data.xml"/>
-		<xi:include href="xml/gis-http.xml"/>
-		<xi:include href="xml/gis-wms.xml"/>
+		<xi:include href="xml/grits-data.xml"/>
+		<xi:include href="xml/grits-http.xml"/>
+		<xi:include href="xml/grits-wms.xml"/>
 	</chapter>
 
 	<chapter>
 		<title>Drawing Objects</title>
-		<xi:include href="xml/gis-object.xml"/>
-		<xi:include href="xml/gis-tile.xml"/>
-		<xi:include href="xml/gis-marker.xml"/>
-		<xi:include href="xml/gis-callback.xml"/>
+		<xi:include href="xml/grits-object.xml"/>
+		<xi:include href="xml/grits-tile.xml"/>
+		<xi:include href="xml/grits-marker.xml"/>
+		<xi:include href="xml/grits-callback.xml"/>
 	</chapter>
 
 	<chapter>
 		<title>Plugins</title>
-		<xi:include href="xml/gis-plugin.xml"/>
+		<xi:include href="xml/grits-plugin.xml"/>
 		<xi:include href="xml/elev.xml"/>
 		<xi:include href="xml/env.xml"/>
 		<xi:include href="xml/map.xml"/>
@@ -47,7 +47,7 @@
 
 	<chapter>
 		<title>Miscellaneous</title>
-		<xi:include href="gis-demo.xml"/>
+		<xi:include href="grits-demo.xml"/>
 	</chapter>
 
 	<index>
diff --git a/examples/plugin/teapot.c b/examples/plugin/teapot.c
index d2a51fe..60c52f4 100644
--- a/examples/plugin/teapot.c
+++ b/examples/plugin/teapot.c
@@ -27,7 +27,7 @@
  ***********/
 static gboolean rotate(gpointer _teapot)
 {
-	GisPluginTeapot *teapot = _teapot;
+	GritsPluginTeapot *teapot = _teapot;
 	if (gtk_toggle_button_get_active(teapot->button)) {
 		teapot->rotation += 1.0;
 		gtk_widget_queue_draw(GTK_WIDGET(teapot->viewer));
@@ -35,10 +35,10 @@ static gboolean rotate(gpointer _teapot)
 	return TRUE;
 }
 
-static void expose(GisCallback *callback, GisOpenGL *opengl, gpointer _teapot)
+static void expose(GritsCallback *callback, GritsOpenGL *opengl, gpointer _teapot)
 {
-	GisPluginTeapot *teapot = GIS_PLUGIN_TEAPOT(_teapot);
-	g_debug("GisPluginTeapot: expose");
+	GritsPluginTeapot *teapot = GRITS_PLUGIN_TEAPOT(_teapot);
+	g_debug("GritsPluginTeapot: expose");
 
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
@@ -66,22 +66,22 @@ static void expose(GisCallback *callback, GisOpenGL *opengl, gpointer _teapot)
 /***********
  * Methods *
  ***********/
-GisPluginTeapot *gis_plugin_teapot_new(GisViewer *viewer, GisPrefs *prefs)
+GritsPluginTeapot *grits_plugin_teapot_new(GritsViewer *viewer, GritsPrefs *prefs)
 {
-	g_debug("GisPluginTeapot: new");
-	GisPluginTeapot *teapot = g_object_new(GIS_TYPE_PLUGIN_TEAPOT, NULL);
+	g_debug("GritsPluginTeapot: new");
+	GritsPluginTeapot *teapot = g_object_new(GRITS_TYPE_PLUGIN_TEAPOT, NULL);
 	teapot->viewer = viewer;
 
 	/* Add renderers */
-	GisCallback *callback = gis_callback_new(expose, teapot);
-	gis_viewer_add(viewer, GIS_OBJECT(callback), GIS_LEVEL_OVERLAY+1, 0);
+	GritsCallback *callback = grits_callback_new(expose, teapot);
+	grits_viewer_add(viewer, GRITS_OBJECT(callback), GRITS_LEVEL_OVERLAY+1, 0);
 
 	return teapot;
 }
 
-static GtkWidget *gis_plugin_teapot_get_config(GisPlugin *_teapot)
+static GtkWidget *grits_plugin_teapot_get_config(GritsPlugin *_teapot)
 {
-	GisPluginTeapot *teapot = GIS_PLUGIN_TEAPOT(_teapot);
+	GritsPluginTeapot *teapot = GRITS_PLUGIN_TEAPOT(_teapot);
 	return GTK_WIDGET(teapot->button);
 }
 
@@ -90,36 +90,36 @@ static GtkWidget *gis_plugin_teapot_get_config(GisPlugin *_teapot)
  * GObject code *
  ****************/
 /* Plugin init */
-static void gis_plugin_teapot_plugin_init(GisPluginInterface *iface);
-G_DEFINE_TYPE_WITH_CODE(GisPluginTeapot, gis_plugin_teapot, G_TYPE_OBJECT,
-		G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
-			gis_plugin_teapot_plugin_init));
-static void gis_plugin_teapot_plugin_init(GisPluginInterface *iface)
+static void grits_plugin_teapot_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginTeapot, grits_plugin_teapot, G_TYPE_OBJECT,
+		G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+			grits_plugin_teapot_plugin_init));
+static void grits_plugin_teapot_plugin_init(GritsPluginInterface *iface)
 {
-	g_debug("GisPluginTeapot: plugin_init");
+	g_debug("GritsPluginTeapot: plugin_init");
 	/* Add methods to the interface */
-	iface->get_config = gis_plugin_teapot_get_config;
+	iface->get_config = grits_plugin_teapot_get_config;
 }
 /* Class/Object init */
-static void gis_plugin_teapot_init(GisPluginTeapot *teapot)
+static void grits_plugin_teapot_init(GritsPluginTeapot *teapot)
 {
-	g_debug("GisPluginTeapot: init");
+	g_debug("GritsPluginTeapot: init");
 	/* Set defaults */
 	teapot->button    = GTK_TOGGLE_BUTTON(gtk_toggle_button_new_with_label("Rotate"));
 	teapot->rotate_id = g_timeout_add(1000/60, rotate, teapot);
 	teapot->rotation  = 30.0;
 }
-static void gis_plugin_teapot_dispose(GObject *gobject)
+static void grits_plugin_teapot_dispose(GObject *gobject)
 {
-	g_debug("GisPluginTeapot: dispose");
-	GisPluginTeapot *teapot = GIS_PLUGIN_TEAPOT(gobject);
+	g_debug("GritsPluginTeapot: dispose");
+	GritsPluginTeapot *teapot = GRITS_PLUGIN_TEAPOT(gobject);
 	g_source_remove(teapot->rotate_id);
 	/* Drop references */
-	G_OBJECT_CLASS(gis_plugin_teapot_parent_class)->dispose(gobject);
+	G_OBJECT_CLASS(grits_plugin_teapot_parent_class)->dispose(gobject);
 }
-static void gis_plugin_teapot_class_init(GisPluginTeapotClass *klass)
+static void grits_plugin_teapot_class_init(GritsPluginTeapotClass *klass)
 {
-	g_debug("GisPluginTeapot: class_init");
+	g_debug("GritsPluginTeapot: class_init");
 	GObjectClass *gobject_class = (GObjectClass*)klass;
-	gobject_class->dispose  = gis_plugin_teapot_dispose;
+	gobject_class->dispose  = grits_plugin_teapot_dispose;
 }
diff --git a/examples/plugin/teapot.h b/examples/plugin/teapot.h
index a849ef3..c042ae9 100644
--- a/examples/plugin/teapot.h
+++ b/examples/plugin/teapot.h
@@ -20,33 +20,33 @@
 
 #include <glib-object.h>
 
-#define GIS_TYPE_PLUGIN_TEAPOT            (gis_plugin_teapot_get_type ())
-#define GIS_PLUGIN_TEAPOT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PLUGIN_TEAPOT, GisPluginTeapot))
-#define GIS_IS_PLUGIN_TEAPOT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PLUGIN_TEAPOT))
-#define GIS_PLUGIN_TEAPOT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PLUGIN_TEAPOT, GisPluginTeapotClass))
-#define GIS_IS_PLUGIN_TEAPOT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PLUGIN_TEAPOT))
-#define GIS_PLUGIN_TEAPOT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PLUGIN_TEAPOT, GisPluginTeapotClass))
+#define GRITS_TYPE_PLUGIN_TEAPOT            (grits_plugin_teapot_get_type ())
+#define GRITS_PLUGIN_TEAPOT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PLUGIN_TEAPOT, GritsPluginTeapot))
+#define GRITS_IS_PLUGIN_TEAPOT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PLUGIN_TEAPOT))
+#define GRITS_PLUGIN_TEAPOT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PLUGIN_TEAPOT, GritsPluginTeapotClass))
+#define GRITS_IS_PLUGIN_TEAPOT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PLUGIN_TEAPOT))
+#define GRITS_PLUGIN_TEAPOT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PLUGIN_TEAPOT, GritsPluginTeapotClass))
 
-typedef struct _GisPluginTeapot      GisPluginTeapot;
-typedef struct _GisPluginTeapotClass GisPluginTeapotClass;
+typedef struct _GritsPluginTeapot      GritsPluginTeapot;
+typedef struct _GritsPluginTeapotClass GritsPluginTeapotClass;
 
-struct _GisPluginTeapot {
+struct _GritsPluginTeapot {
 	GObject parent_instance;
 
 	/* instance members */
-	GisViewer       *viewer;
+	GritsViewer     *viewer;
 	GtkToggleButton *button;
 	guint            rotate_id;
 	float            rotation;
 };
 
-struct _GisPluginTeapotClass {
+struct _GritsPluginTeapotClass {
 	GObjectClass parent_class;
 };
 
-GType gis_plugin_teapot_get_type();
+GType grits_plugin_teapot_get_type();
 
 /* Methods */
-GisPluginTeapot *gis_plugin_teapot_new(GisViewer *viewer, GisPrefs *prefs);
+GritsPluginTeapot *grits_plugin_teapot_new(GritsViewer *viewer, GritsPrefs *prefs);
 
 #endif
diff --git a/src/.vimrc b/src/.vimrc
index 2de4374..2dd1127 100644
--- a/src/.vimrc
+++ b/src/.vimrc
@@ -1,5 +1,5 @@
 set makeprg=make\ test
-set tw=100
+"set tw=100
 
 au FileType valgrind syn match gritsFile "\v<(grits-\w+|roam|elev|env|map|sat|test|radar)\.c>" containedin=valgrindSrc
 au FileType valgrind hi link gritsFile Error
diff --git a/src/data/grits-data.c b/src/data/grits-data.c
index a41e9b0..5145b77 100644
--- a/src/data/grits-data.c
+++ b/src/data/grits-data.c
@@ -16,7 +16,7 @@
  */
 
 /**
- * SECTION:gis-data
+ * SECTION:grits-data
  * @short_description: Miscellaneous utilities for data access
  * @include: glib/gstdio.h
  *
diff --git a/src/data/grits-data.h b/src/data/grits-data.h
index 671280d..65d6430 100644
--- a/src/data/grits-data.h
+++ b/src/data/grits-data.h
@@ -15,29 +15,29 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_DATA_H__
-#define __GIS_DATA_H__
+#ifndef __GRITS_DATA_H__
+#define __GRITS_DATA_H__
 
 #include <glib.h>
 
 /**
- * GisCacheType:
- * @GIS_LOCAL:   Only return local files (for offline mode)
- * @GIS_ONCE:    Download the file only if it does not exist
- * @GIS_UPDATE:  Update the file to be like the server
- * @GIS_REFRESH: Delete the existing file and fetch a new copy
+ * GritsCacheType:
+ * @GRITS_LOCAL:   Only return local files (for offline mode)
+ * @GRITS_ONCE:    Download the file only if it does not exist
+ * @GRITS_UPDATE:  Update the file to be like the server
+ * @GRITS_REFRESH: Delete the existing file and fetch a new copy
  *
  * Various methods for caching data
  */
 typedef enum {
-	GIS_LOCAL,
-	GIS_ONCE,
-	GIS_UPDATE,
-	GIS_REFRESH,
-} GisCacheType;
+	GRITS_LOCAL,
+	GRITS_ONCE,
+	GRITS_UPDATE,
+	GRITS_REFRESH,
+} GritsCacheType;
 
 /**
- * GisChunkCallback:
+ * GritsChunkCallback:
  * @file:      path to the file which is being fetched
  * @cur:       current offset in the file
  * @total:     total size of the file
@@ -46,7 +46,7 @@ typedef enum {
  * Function called when part of a file is fetched
  * Used for updating progress bars, etc
  */
-typedef void (*GisChunkCallback)(gchar *file, goffset cur,
+typedef void (*GritsChunkCallback)(gchar *file, goffset cur,
 		goffset total, gpointer user_data);
 
 FILE *fopen_p(const gchar *path, const gchar *mode);
diff --git a/src/data/grits-http.c b/src/data/grits-http.c
index c0f098f..c4b4484 100644
--- a/src/data/grits-http.c
+++ b/src/data/grits-http.c
@@ -16,13 +16,13 @@
  */
 
 /**
- * SECTION:gis-http
+ * SECTION:grits-http
  * @short_description: Hyper Text Transfer Protocol
  *
- * #GisHttp is a small wrapper around libsoup to provide data access using the
- * Hyper Text Transfer Protocol. Each #GisHttp should be associated with a
- * particular server or dataset, all the files downloaded for this dataset will
- * be cached together in $HOME/.cache/grits/
+ * #GritsHttp is a small wrapper around libsoup to provide data access using
+ * the Hyper Text Transfer Protocol. Each #GritsHttp should be associated with
+ * a particular server or dataset, all the files downloaded for this dataset
+ * will be cached together in $HOME/.cache/grits/
  */
 
 #include <config.h>
@@ -32,25 +32,25 @@
 
 #include "grits-http.h"
 
-gchar *_get_cache_path(GisHttp *http, const gchar *local)
+gchar *_get_cache_path(GritsHttp *http, const gchar *local)
 {
 	return g_build_filename(g_get_user_cache_dir(), PACKAGE,
 			http->prefix, local, NULL);
 }
 
 /**
- * gis_http_new:
+ * grits_http_new:
  * @prefix: The prefix in the cache to store the downloaded files.
  *          For example: * "/nexrad/level2/".
  *
- * Create a new #GisHttp for the given prefix
+ * Create a new #GritsHttp for the given prefix
  *
- * Returns: the new #GisHttp
+ * Returns: the new #GritsHttp
  */
-GisHttp *gis_http_new(const gchar *prefix)
+GritsHttp *grits_http_new(const gchar *prefix)
 {
-	g_debug("GisHttp: new - %s", prefix);
-	GisHttp *http = g_new0(GisHttp, 1);
+	g_debug("GritsHttp: new - %s", prefix);
+	GritsHttp *http = g_new0(GritsHttp, 1);
 	http->soup = soup_session_sync_new();
 	http->prefix = g_strdup(prefix);
 	g_object_set(http->soup, "user-agent", PACKAGE_STRING, NULL);
@@ -58,14 +58,14 @@ GisHttp *gis_http_new(const gchar *prefix)
 }
 
 /**
- * gis_http_free:
- * @http: the #GisHttp to free
+ * grits_http_free:
+ * @http: the #GritsHttp to free
  *
  * Frees resources used by @http and cancels any pending requests.
  */
-void gis_http_free(GisHttp *http)
+void grits_http_free(GritsHttp *http)
 {
-	g_debug("GisHttp: free - %s", http->prefix);
+	g_debug("GritsHttp: free - %s", http->prefix);
 	soup_session_abort(http->soup);
 	g_object_unref(http->soup);
 	g_free(http->prefix);
@@ -76,12 +76,12 @@ void gis_http_free(GisHttp *http)
 struct _CacheInfo {
 	FILE  *fp;
 	gchar *path;
-	GisChunkCallback callback;
+	GritsChunkCallback callback;
 	gpointer user_data;
 };
 struct _CacheInfoMain {
 	gchar *path;
-	GisChunkCallback callback;
+	GritsChunkCallback callback;
 	gpointer user_data;
 	goffset cur, total;
 };
@@ -106,13 +106,13 @@ static void _chunk_cb(SoupMessage *message, SoupBuffer *chunk, gpointer _info)
 	struct _CacheInfo *info = _info;
 
 	if (!SOUP_STATUS_IS_SUCCESSFUL(message->status_code)) {
-		g_warning("GisHttp: _chunk_cb - soup failed with %d",
+		g_warning("GritsHttp: _chunk_cb - soup failed with %d",
 				message->status_code);
 		return;
 	}
 
 	if (!fwrite(chunk->data, chunk->length, 1, info->fp))
-		g_error("GisHttp: _chunk_cb - Unable to write data");
+		g_error("GritsHttp: _chunk_cb - Unable to write data");
 
 	if (info->callback) {
 		struct _CacheInfoMain *infomain = g_new0(struct _CacheInfoMain, 1);
@@ -129,8 +129,8 @@ static void _chunk_cb(SoupMessage *message, SoupBuffer *chunk, gpointer _info)
 }
 
 /**
- * gis_http_fetch:
- * @http:      the #GisHttp connection to use
+ * grits_http_fetch:
+ * @http:      the #GritsHttp connection to use
  * @uri:       the URI to fetch
  * @local:     the local name to give to the file
  * @mode:      the update type to use when fetching data
@@ -142,21 +142,21 @@ static void _chunk_cb(SoupMessage *message, SoupBuffer *chunk, gpointer _info)
  *
  * Returns: The local path to the complete file
  */
-/* TODO: use .part extentions and continue even when using GIS_ONCE */
-gchar *gis_http_fetch(GisHttp *http, const gchar *uri, const char *local,
-		GisCacheType mode, GisChunkCallback callback, gpointer user_data)
+/* TODO: use .part extentions and continue even when using GRITS_ONCE */
+gchar *grits_http_fetch(GritsHttp *http, const gchar *uri, const char *local,
+		GritsCacheType mode, GritsChunkCallback callback, gpointer user_data)
 {
-	g_debug("GisHttp: fetch - %s mode=%d", local, mode);
+	g_debug("GritsHttp: fetch - %s mode=%d", local, mode);
 	gchar *path = _get_cache_path(http, local);
 
 	/* Unlink the file if we're refreshing it */
-	if (mode == GIS_REFRESH)
+	if (mode == GRITS_REFRESH)
 		g_remove(path);
 
 	/* Do the cache if necessasairy */
-	if (!(mode == GIS_ONCE && g_file_test(path, G_FILE_TEST_EXISTS)) &&
-			mode != GIS_LOCAL) {
-		g_debug("GisHttp: fetch - Caching file %s", local);
+	if (!(mode == GRITS_ONCE && g_file_test(path, G_FILE_TEST_EXISTS)) &&
+			mode != GRITS_LOCAL) {
+		g_debug("GritsHttp: fetch - Caching file %s", local);
 
 		/* Open the file for writting */
 		gchar *part = path;
@@ -192,7 +192,7 @@ gchar *gis_http_fetch(GisHttp *http, const gchar *uri, const char *local,
 		if (message->status_code == 416) {
 			/* Range unsatisfiable, file already complete */
 		} else if (!SOUP_STATUS_IS_SUCCESSFUL(message->status_code)) {
-			g_warning("GisHttp: done_cb - error copying file, status=%d\n"
+			g_warning("GritsHttp: done_cb - error copying file, status=%d\n"
 					"\tsrc=%s\n"
 					"\tdst=%s",
 					message->status_code, uri, path);
@@ -206,8 +206,8 @@ gchar *gis_http_fetch(GisHttp *http, const gchar *uri, const char *local,
 }
 
 /**
- * gis_http_available:
- * @http:    the #GisHttp connection to use
+ * grits_http_available:
+ * @http:    the #GritsHttp connection to use
  * @filter:  filter used to extract files from the index, or NULL
  *           For example: "href=\"([^"]*)\""
  * @cache:   path to the local cache, or NULL to not search the cache
@@ -222,11 +222,11 @@ gchar *gis_http_fetch(GisHttp *http, const gchar *uri, const char *local,
  *
  * Returns the list of matching filenames
  */
-GList *gis_http_available(GisHttp *http,
+GList *grits_http_available(GritsHttp *http,
 		gchar *filter, gchar *cache,
 		gchar *extract, gchar *index)
 {
-	g_debug("GisHttp: available - %s~=%s %s~=%s",
+	g_debug("GritsHttp: available - %s~=%s %s~=%s",
 			filter, cache, extract, index);
 	GRegex *filter_re = g_regex_new(filter, 0, 0, NULL);
 	GList  *files = NULL;
@@ -247,8 +247,8 @@ GList *gis_http_available(GisHttp *http,
 	if (index) {
 		gchar tmp[32];
 		g_snprintf(tmp, sizeof(tmp), ".index.%x", g_random_int());
-		gchar *path = gis_http_fetch(http, index, tmp,
-				GIS_REFRESH, NULL, NULL);
+		gchar *path = grits_http_fetch(http, index, tmp,
+				GRITS_REFRESH, NULL, NULL);
 		if (!path)
 			return files;
 		gchar *html;
diff --git a/src/data/grits-http.h b/src/data/grits-http.h
index 713c2c8..04f9a63 100644
--- a/src/data/grits-http.h
+++ b/src/data/grits-http.h
@@ -15,29 +15,29 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_HTTP_H__
-#define __GIS_HTTP_H__
+#ifndef __GRITS_HTTP_H__
+#define __GRITS_HTTP_H__
 
 #include <glib.h>
 #include <libsoup/soup.h>
 
 #include "grits-data.h"
 
-typedef struct _GisHttp {
+typedef struct _GritsHttp {
 	SoupSession *soup;
 	gchar *prefix;
-} GisHttp;
+} GritsHttp;
 
-GisHttp *gis_http_new(const gchar *prefix);
+GritsHttp *grits_http_new(const gchar *prefix);
 
-void gis_http_free(GisHttp *http);
+void grits_http_free(GritsHttp *http);
 
-gchar *gis_http_fetch(GisHttp *http, const gchar *uri, const gchar *local,
-		GisCacheType mode,
-		GisChunkCallback callback,
+gchar *grits_http_fetch(GritsHttp *http, const gchar *uri, const gchar *local,
+		GritsCacheType mode,
+		GritsChunkCallback callback,
 		gpointer user_data);
 
-GList *gis_http_available(GisHttp *http,
+GList *grits_http_available(GritsHttp *http,
 		gchar *filter, gchar *cache,
 		gchar *extract, gchar *index);
 
diff --git a/src/data/grits-wms.c b/src/data/grits-wms.c
index 300528c..32c0c0c 100644
--- a/src/data/grits-wms.c
+++ b/src/data/grits-wms.c
@@ -16,11 +16,11 @@
  */
 
 /**
- * SECTION:gis-wms
+ * SECTION:grits-wms
  * @short_description: Web Map Service
  *
  * Provides an API for accessing image tiles form a Web Map Service (WMS)
- * server. #GisWms integrates closely with #GisTile. The remote server must
+ * server. #GritsWms integrates closely with #GritsTile. The remote server must
  * support the EPSG:4326 cartographic projection.
  */
 
@@ -76,7 +76,7 @@
 #include "grits-wms.h"
 #include "grits-http.h"
 
-static gchar *_make_uri(GisWms *wms, GisTile *tile)
+static gchar *_make_uri(GritsWms *wms, GritsTile *tile)
 {
 	return g_strdup_printf(
 		"%s?"
@@ -102,24 +102,24 @@ static gchar *_make_uri(GisWms *wms, GisTile *tile)
 }
 
 /**
- * gis_wms_fetch:
- * @wms:       the #GisWms to fetch the data from 
- * @tile:      a #GisTile representing the area to be fetched 
+ * grits_wms_fetch:
+ * @wms:       the #GritsWms to fetch the data from 
+ * @tile:      a #GritsTile representing the area to be fetched 
  * @mode:      the update type to use when fetching data
  * @callback:  callback to call when a chunk of data is received
  * @user_data: user data to pass to the callback
  *
- * Fetch a image coresponding to a #GisTile from a WMS server. 
+ * Fetch a image coresponding to a #GritsTile from a WMS server. 
  *
  * Returns: the path to the local file.
  */
-gchar *gis_wms_fetch(GisWms *wms, GisTile *tile, GisCacheType mode,
-		GisChunkCallback callback, gpointer user_data)
+gchar *grits_wms_fetch(GritsWms *wms, GritsTile *tile, GritsCacheType mode,
+		GritsChunkCallback callback, gpointer user_data)
 {
 	gchar *uri   = _make_uri(wms, tile);
-	gchar *tilep = gis_tile_get_path(tile);
+	gchar *tilep = grits_tile_get_path(tile);
 	gchar *local = g_strdup_printf("%s%s", tilep, wms->extension);
-	gchar *path  = gis_http_fetch(wms->http, uri, local,
+	gchar *path  = grits_http_fetch(wms->http, uri, local,
 			mode, callback, user_data);
 	g_free(uri);
 	g_free(tilep);
@@ -128,7 +128,7 @@ gchar *gis_wms_fetch(GisWms *wms, GisTile *tile, GisCacheType mode,
 }
 
 /**
- * gis_wms_new:
+ * grits_wms_new:
  * @uri_prefix: the base URL for the WMS server
  * @uri_layer:  the layer the images should be fetched from (wms LAYERS)
  * @uri_format: the format the images should be fetch in (wms FORMAT)
@@ -137,39 +137,39 @@ gchar *gis_wms_fetch(GisWms *wms, GisTile *tile, GisCacheType mode,
  * @width:      width in pixels for downloaded images (wms WIDTH)
  * @height:     height in pixels for downloaded images (wms HEIGHT)
  *
- * Creates a #GisWms for some layer on a WMS server. The returned #GisWms
+ * Creates a #GritsWms for some layer on a WMS server. The returned #GritsWms
  * stores information about the images so it does not need to be entered each
  * time a images is fetched.
  *
- * Returns: the new #GisWms
+ * Returns: the new #GritsWms
  */
-GisWms *gis_wms_new(
+GritsWms *grits_wms_new(
 	const gchar *uri_prefix, const gchar *uri_layer,
 	const gchar *uri_format, const gchar *prefix,
 	const gchar *extension, gint width, gint height)
 {
-	g_debug("GisWms: new - %s", uri_prefix);
-	GisWms *wms = g_new0(GisWms, 1);
-	wms->http         = gis_http_new(prefix);
-	wms->uri_prefix   = g_strdup(uri_prefix);
-	wms->uri_layer    = g_strdup(uri_layer);
-	wms->uri_format   = g_strdup(uri_format);
-	wms->extension    = g_strdup(extension);
-	wms->width        = width;
-	wms->height       = height;
+	g_debug("GritsWms: new - %s", uri_prefix);
+	GritsWms *wms = g_new0(GritsWms, 1);
+	wms->http       = grits_http_new(prefix);
+	wms->uri_prefix = g_strdup(uri_prefix);
+	wms->uri_layer  = g_strdup(uri_layer);
+	wms->uri_format = g_strdup(uri_format);
+	wms->extension  = g_strdup(extension);
+	wms->width      = width;
+	wms->height     = height;
 	return wms;
 }
 
 /**
- * gis_wms_free:
- * @wms: the #GisWms to free
+ * grits_wms_free:
+ * @wms: the #GritsWms to free
  *
  * Free resources used by @wms and cancel any pending requests.
  */
-void gis_wms_free(GisWms *wms)
+void grits_wms_free(GritsWms *wms)
 {
-	g_debug("GisWms: free - %s", wms->uri_prefix);
-	gis_http_free(wms->http);
+	g_debug("GritsWms: free - %s", wms->uri_prefix);
+	grits_http_free(wms->http);
 	g_free(wms->uri_prefix);
 	g_free(wms->uri_layer);
 	g_free(wms->uri_format);
diff --git a/src/data/grits-wms.h b/src/data/grits-wms.h
index 236a405..494bd20 100644
--- a/src/data/grits-wms.h
+++ b/src/data/grits-wms.h
@@ -15,32 +15,32 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_WMS_H__
-#define __GIS_WMS_H__
+#ifndef __GRITS_WMS_H__
+#define __GRITS_WMS_H__
 
 #include <glib.h>
 
 #include "data/grits-http.h"
 #include "objects/grits-tile.h"
 
-typedef struct _GisWms {
-	GisHttp *http;
+typedef struct _GritsWms {
+	GritsHttp *http;
 	gchar *uri_prefix;
 	gchar *uri_layer;
 	gchar *uri_format;
 	gchar *extension;
 	gint   width;
 	gint   height;
-} GisWms;
+} GritsWms;
 
-GisWms *gis_wms_new(
+GritsWms *grits_wms_new(
 	const gchar *uri_prefix, const gchar *uri_layer,
 	const gchar *uri_format, const gchar *prefix,
 	const gchar *extension, gint width, gint height);
 
-gchar *gis_wms_fetch(GisWms *wms, GisTile *tile, GisCacheType mode,
-		GisChunkCallback callback, gpointer user_data);
+gchar *grits_wms_fetch(GritsWms *wms, GritsTile *tile, GritsCacheType mode,
+		GritsChunkCallback callback, gpointer user_data);
 
-void gis_wms_free(GisWms *wms);
+void grits_wms_free(GritsWms *wms);
 
 #endif
diff --git a/src/grits-demo.c b/src/grits-demo.c
index c439e6f..d9532f4 100644
--- a/src/grits-demo.c
+++ b/src/grits-demo.c
@@ -22,9 +22,9 @@
 #include "grits.h"
 
 
-static GisPrefs   *prefs;
-static GisPlugins *plugins;
-static GisViewer  *viewer;
+static GritsPrefs   *prefs;
+static GritsPlugins *plugins;
+static GritsViewer  *viewer;
 
 
 /*************
@@ -39,7 +39,7 @@ static gboolean on_delete(GtkWidget *widget, GdkEvent *event, gpointer data)
 static void on_offline(GtkToggleAction *action, gpointer _)
 {
 	gboolean active = gtk_toggle_action_get_active(action);
-	gis_viewer_set_offline(viewer, active);
+	grits_viewer_set_offline(viewer, active);
 }
 
 static void on_plugin(GtkToggleAction *action, GtkWidget *notebook)
@@ -47,16 +47,16 @@ static void on_plugin(GtkToggleAction *action, GtkWidget *notebook)
 	const gchar *name = gtk_action_get_name(GTK_ACTION(action));
 	gboolean active = gtk_toggle_action_get_active(action);
 	if (active) {
-		GisPlugin *plugin = gis_plugins_enable(plugins, name,
-				GIS_VIEWER(viewer), prefs);
-		GtkWidget *config = gis_plugin_get_config(plugin);
+		GritsPlugin *plugin = grits_plugins_enable(plugins, name,
+				GRITS_VIEWER(viewer), prefs);
+		GtkWidget *config = grits_plugin_get_config(plugin);
 		if (config) {
 			gtk_notebook_append_page(GTK_NOTEBOOK(notebook), config,
 					gtk_label_new(name));
 			gtk_widget_show_all(config);
 		}
 	} else {
-		gis_plugins_disable(plugins, name);
+		grits_plugins_disable(plugins, name);
 		guint n_pages = gtk_notebook_get_n_pages(GTK_NOTEBOOK(notebook));
 		for (int i = 0; i < n_pages; i++) {
 			GtkWidget *body = gtk_notebook_get_nth_page(GTK_NOTEBOOK(notebook), i);
@@ -145,14 +145,14 @@ static void setup_plugins(GtkUIManager *manager, GtkNotebook *notebook)
 	GtkActionGroup *actions = gtk_action_group_new("Plugins");
 	gtk_ui_manager_insert_action_group(manager, actions, 1);
 	guint merge_id = gtk_ui_manager_new_merge_id(manager);
-	for (GList *cur = gis_plugins_available(plugins); cur; cur = cur->next) {
+	for (GList *cur = grits_plugins_available(plugins); cur; cur = cur->next) {
 		gchar *name = cur->data;
 		GtkToggleAction *action = gtk_toggle_action_new(name, name, NULL, NULL);
 		g_signal_connect(action, "toggled", G_CALLBACK(on_plugin), notebook);
 		gtk_action_group_add_action(actions, GTK_ACTION(action));
 		gtk_ui_manager_add_ui(manager, merge_id, "/Menu/Plugins", name, name,
 				GTK_UI_MANAGER_AUTO, TRUE);
-		if (gis_prefs_get_boolean_v(prefs, "plugins", name, NULL))
+		if (grits_prefs_get_boolean_v(prefs, "plugins", name, NULL))
 			gtk_toggle_action_set_active(action, TRUE);
 	}
 }
@@ -161,7 +161,7 @@ static void restore_states(GtkUIManager *manager)
 {
 	GtkAction *action = gtk_ui_manager_get_action(manager, "/Menu/File/Offline");
 	gtk_toggle_action_set_active(GTK_TOGGLE_ACTION(action),
-			gis_viewer_get_offline(viewer));
+			grits_viewer_get_offline(viewer));
 }
 
 int main(int argc, char **argv)
@@ -170,9 +170,9 @@ int main(int argc, char **argv)
 	gdk_threads_init();
 	gtk_init(&argc, &argv);
 
-	prefs   = gis_prefs_new(NULL, NULL);
-	plugins = gis_plugins_new(g_getenv("GIS_PLUGIN_PATH"), prefs);
-	viewer  = gis_opengl_new(plugins, prefs);
+	prefs   = grits_prefs_new(NULL, NULL);
+	plugins = grits_plugins_new(g_getenv("GRITS_PLUGIN_PATH"), prefs);
+	viewer  = grits_opengl_new(plugins, prefs);
 
 	gdk_threads_enter();
 
@@ -186,12 +186,12 @@ int main(int argc, char **argv)
 
 	gtk_main();
 
-	gis_plugins_free(plugins);
+	grits_plugins_free(plugins);
 	g_object_unref(prefs);
 
 	gdk_threads_leave();
 
-	g_debug("GisDemo: main - refs=%d,%d",
+	g_debug("GritsDemo: main - refs=%d,%d",
 			G_OBJECT(manager)->ref_count,
 			G_OBJECT(window)->ref_count);
 	g_object_unref(manager);
diff --git a/src/grits-opengl.c b/src/grits-opengl.c
index 7993741..93a1165 100644
--- a/src/grits-opengl.c
+++ b/src/grits-opengl.c
@@ -16,15 +16,15 @@
  */
 
 /**
- * SECTION:gis-opengl
+ * SECTION:grits-opengl
  * @short_description: OpenGL based virtual globe
  *
- * #GisOpenGL is the core rendering engine used by grits. Theoretically other
- * renderers could be writte, but they have not been. GisOpenGL uses the ROAM
- * algorithm for updating surface mesh the planet. The only thing GisOpenGL can
- * actually render on it's own is a wireframe of a sphere.
+ * #GritsOpenGL is the core rendering engine used by grits. Theoretically other
+ * renderers could be writte, but they have not been. GritsOpenGL uses the ROAM
+ * algorithm for updating surface mesh the planet. The only thing GritsOpenGL
+ * can actually render on it's own is a wireframe of a sphere.
  *
- * GisOpenGL relies on #GtkGlExt and requires (at least) OpenGL 2.0.
+ * GritsOpenGL relies on #GtkGlExt and requires (at least) OpenGL 2.0.
  */
 
 #include <config.h>
@@ -49,15 +49,15 @@
 /***********
  * Helpers *
  ***********/
-static void _set_visuals(GisOpenGL *opengl)
+static void _set_visuals(GritsOpenGL *opengl)
 {
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
 
 	/* Camera 1 */
 	double lat, lon, elev, rx, ry, rz;
-	gis_viewer_get_location(GIS_VIEWER(opengl), &lat, &lon, &elev);
-	gis_viewer_get_rotation(GIS_VIEWER(opengl), &rx, &ry, &rz);
+	grits_viewer_get_location(GRITS_VIEWER(opengl), &lat, &lon, &elev);
+	grits_viewer_get_rotation(GRITS_VIEWER(opengl), &rx, &ry, &rz);
 	glRotatef(rx, 1, 0, 0);
 	glRotatef(rz, 0, 0, 1);
 
@@ -128,9 +128,9 @@ struct RenderLevel {
 	GList sorted;
 };
 
-static gboolean on_configure(GisOpenGL *opengl, GdkEventConfigure *event, gpointer _)
+static gboolean on_configure(GritsOpenGL *opengl, GdkEventConfigure *event, gpointer _)
 {
-	g_debug("GisOpenGL: on_configure");
+	g_debug("GritsOpenGL: on_configure");
 
 	double width  = GTK_WIDGET(opengl)->allocation.width;
 	double height = GTK_WIDGET(opengl)->allocation.height;
@@ -153,8 +153,8 @@ static gboolean on_configure(GisOpenGL *opengl, GdkEventConfigure *event, gpoint
 
 static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
 {
-	g_debug("GisOpenGL: _draw_level - level=%-4d", (int)key);
-	GisOpenGL *opengl = user_data;
+	g_debug("GritsOpenGL: _draw_level - level=%-4d", (int)key);
+	GritsOpenGL *opengl = user_data;
 	struct RenderLevel *level = value;
 	int nsorted = 0, nunsorted = 0;
 	GList *cur = NULL;
@@ -163,25 +163,25 @@ static gboolean _draw_level(gpointer key, gpointer value, gpointer user_data)
 	glDepthMask(TRUE);
 	glClear(GL_DEPTH_BUFFER_BIT);
 	for (cur = level->unsorted.next; cur; cur = cur->next, nunsorted++)
-		gis_object_draw( GIS_OBJECT(cur->data), opengl);
+		grits_object_draw(GRITS_OBJECT(cur->data), opengl);
 
 	/* Freeze depth buffer and draw transparent objects sorted */
 	/* TODO: sorting */
 	//glDepthMask(FALSE);
 	glAlphaFunc(GL_GREATER, 0.1);
 	for (cur = level->sorted.next; cur; cur = cur->next, nsorted++)
-		gis_object_draw(GIS_OBJECT(cur->data), opengl);
+		grits_object_draw(GRITS_OBJECT(cur->data), opengl);
 
 	/* TODO: Prune empty levels */
 
-	g_debug("GisOpenGL: _draw_level - drew %d,%d objects",
+	g_debug("GritsOpenGL: _draw_level - drew %d,%d objects",
 			nunsorted, nsorted);
 	return FALSE;
 }
 
-static gboolean on_expose(GisOpenGL *opengl, GdkEventExpose *event, gpointer _)
+static gboolean on_expose(GritsOpenGL *opengl, GdkEventExpose *event, gpointer _)
 {
-	g_debug("GisOpenGL: on_expose - begin");
+	g_debug("GritsOpenGL: on_expose - begin");
 
 	glClear(GL_COLOR_BUFFER_BIT);
 
@@ -208,13 +208,13 @@ static gboolean on_expose(GisOpenGL *opengl, GdkEventExpose *event, gpointer _)
 	GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(opengl));
 	gdk_gl_drawable_swap_buffers(gldrawable);
 
-	g_debug("GisOpenGL: on_expose - end\n");
+	g_debug("GritsOpenGL: on_expose - end\n");
 	return FALSE;
 }
 
-static gboolean on_key_press(GisOpenGL *opengl, GdkEventKey *event, gpointer _)
+static gboolean on_key_press(GritsOpenGL *opengl, GdkEventKey *event, gpointer _)
 {
-	g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
+	g_debug("GritsOpenGL: on_key_press - key=%x, state=%x, plus=%x",
 			event->keyval, event->state, GDK_plus);
 
 	guint kv = event->keyval;
@@ -235,17 +235,17 @@ static gboolean on_key_press(GisOpenGL *opengl, GdkEventKey *event, gpointer _)
 
 static gboolean _update_errors_cb(gpointer _opengl)
 {
-	GisOpenGL *opengl = _opengl;
+	GritsOpenGL *opengl = _opengl;
 	g_mutex_lock(opengl->sphere_lock);
 	roam_sphere_update_errors(opengl->sphere);
 	g_mutex_unlock(opengl->sphere_lock);
 	opengl->ue_source = 0;
 	return FALSE;
 }
-static void on_view_changed(GisOpenGL *opengl,
+static void on_view_changed(GritsOpenGL *opengl,
 		gdouble _1, gdouble _2, gdouble _3)
 {
-	g_debug("GisOpenGL: on_view_changed");
+	g_debug("GritsOpenGL: on_view_changed");
 	_set_visuals(opengl);
 #ifndef ROAM_DEBUG
 	if (!opengl->ue_source)
@@ -257,9 +257,9 @@ static void on_view_changed(GisOpenGL *opengl,
 #endif
 }
 
-static gboolean on_idle(GisOpenGL *opengl)
+static gboolean on_idle(GritsOpenGL *opengl)
 {
-	//g_debug("GisOpenGL: on_idle");
+	//g_debug("GritsOpenGL: on_idle");
 	g_mutex_lock(opengl->sphere_lock);
 	if (roam_sphere_split_merge(opengl->sphere))
 		gtk_widget_queue_draw(GTK_WIDGET(opengl));
@@ -267,9 +267,9 @@ static gboolean on_idle(GisOpenGL *opengl)
 	return TRUE;
 }
 
-static void on_realize(GisOpenGL *opengl, gpointer _)
+static void on_realize(GritsOpenGL *opengl, gpointer _)
 {
-	g_debug("GisOpenGL: on_realize");
+	g_debug("GritsOpenGL: on_realize");
 
 	/* Start OpenGL */
 	GdkGLContext   *glcontext  = gtk_widget_get_gl_context(GTK_WIDGET(opengl));
@@ -300,37 +300,37 @@ static void on_realize(GisOpenGL *opengl, gpointer _)
 }
 
 /*********************
- * GisViewer methods *
+ * GritsViewer methods *
  *********************/
 /**
- * gis_opengl_new:
+ * grits_opengl_new:
  * @plugins: the plugins store to use
  * @prefs:   the preferences object to use
  *
  * Create a new OpenGL renderer.
  *
- * Returns: the new #GisOpenGL
+ * Returns: the new #GritsOpenGL
  */
-GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs)
+GritsViewer *grits_opengl_new(GritsPlugins *plugins, GritsPrefs *prefs)
 {
-	g_debug("GisOpenGL: new");
-	GisViewer *opengl = g_object_new(GIS_TYPE_OPENGL, NULL);
-	gis_viewer_setup(opengl, plugins, prefs);
+	g_debug("GritsOpenGL: new");
+	GritsViewer *opengl = g_object_new(GRITS_TYPE_OPENGL, NULL);
+	grits_viewer_setup(opengl, plugins, prefs);
 	return opengl;
 }
 
-static void gis_opengl_center_position(GisViewer *_opengl, gdouble lat, gdouble lon, gdouble elev)
+static void grits_opengl_center_position(GritsViewer *_opengl, gdouble lat, gdouble lon, gdouble elev)
 {
 	glRotatef(lon, 0, 1, 0);
 	glRotatef(-lat, 1, 0, 0);
 	glTranslatef(0, 0, elev2rad(elev));
 }
 
-static void gis_opengl_project(GisViewer *_opengl,
+static void grits_opengl_project(GritsViewer *_opengl,
 		gdouble lat, gdouble lon, gdouble elev,
 		gdouble *px, gdouble *py, gdouble *pz)
 {
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	gdouble x, y, z;
 	lle2xyz(lat, lon, elev, &x, &y, &z);
 	gluProject(x, y, z,
@@ -340,10 +340,10 @@ static void gis_opengl_project(GisViewer *_opengl,
 		px, py, pz);
 }
 
-static void gis_opengl_set_height_func(GisViewer *_opengl, GisBounds *bounds,
+static void grits_opengl_set_height_func(GritsViewer *_opengl, GritsBounds *bounds,
 		RoamHeightFunc height_func, gpointer user_data, gboolean update)
 {
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	/* TODO: get points? */
 	g_mutex_lock(opengl->sphere_lock);
 	GList *triangles = roam_sphere_get_intersect(opengl->sphere, TRUE,
@@ -364,7 +364,7 @@ static void gis_opengl_set_height_func(GisViewer *_opengl, GisBounds *bounds,
 	g_mutex_unlock(opengl->sphere_lock);
 }
 
-static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
+static void _grits_opengl_clear_height_func_rec(RoamTriangle *root)
 {
 	if (!root)
 		return;
@@ -374,22 +374,22 @@ static void _gis_opengl_clear_height_func_rec(RoamTriangle *root)
 		points[i]->height_data = NULL;
 		roam_point_update_height(points[i]);
 	}
-	_gis_opengl_clear_height_func_rec(root->kids[0]);
-	_gis_opengl_clear_height_func_rec(root->kids[1]);
+	_grits_opengl_clear_height_func_rec(root->kids[0]);
+	_grits_opengl_clear_height_func_rec(root->kids[1]);
 }
 
-static void gis_opengl_clear_height_func(GisViewer *_opengl)
+static void grits_opengl_clear_height_func(GritsViewer *_opengl)
 {
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	for (int i = 0; i < G_N_ELEMENTS(opengl->sphere->roots); i++)
-		_gis_opengl_clear_height_func_rec(opengl->sphere->roots[i]);
+		_grits_opengl_clear_height_func_rec(opengl->sphere->roots[i]);
 }
 
-static gpointer gis_opengl_add(GisViewer *_opengl, GisObject *object,
+static gpointer grits_opengl_add(GritsViewer *_opengl, GritsObject *object,
 		gint key, gboolean sort)
 {
-	g_assert(GIS_IS_OPENGL(_opengl));
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	g_assert(GRITS_IS_OPENGL(_opengl));
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	g_mutex_lock(opengl->objects_lock);
 	struct RenderLevel *level = g_tree_lookup(opengl->objects, (gpointer)key);
 	if (!level) {
@@ -409,13 +409,13 @@ static gpointer gis_opengl_add(GisViewer *_opengl, GisObject *object,
 	return link;
 }
 
-static GisObject *gis_opengl_remove(GisViewer *_opengl, gpointer _link)
+static GritsObject *grits_opengl_remove(GritsViewer *_opengl, gpointer _link)
 {
-	g_assert(GIS_IS_OPENGL(_opengl));
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	g_assert(GRITS_IS_OPENGL(_opengl));
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	g_mutex_lock(opengl->objects_lock);
 	GList *link = _link;
-	GisObject *object = link->data;
+	GritsObject *object = link->data;
 	/* Just unlink and free it, link->prev is assured */
 	link->prev->next = link->next;
 	if (link->next)
@@ -445,10 +445,10 @@ static void _objects_free(gpointer value)
 	g_free(level);
 }
 
-G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
-static void gis_opengl_init(GisOpenGL *opengl)
+G_DEFINE_TYPE(GritsOpenGL, grits_opengl, GRITS_TYPE_VIEWER);
+static void grits_opengl_init(GritsOpenGL *opengl)
 {
-	g_debug("GisOpenGL: init");
+	g_debug("GritsOpenGL: init");
 	opengl->objects      = g_tree_new_full(_objects_cmp, NULL, NULL, _objects_free);
 	opengl->objects_lock = g_mutex_new();
 	opengl->sphere       = roam_sphere_new(opengl);
@@ -468,10 +468,10 @@ static void gis_opengl_init(GisOpenGL *opengl)
 	/* Finish OpenGL init after it's realized */
 	g_signal_connect(opengl, "realize", G_CALLBACK(on_realize), NULL);
 }
-static void gis_opengl_dispose(GObject *_opengl)
+static void grits_opengl_dispose(GObject *_opengl)
 {
-	g_debug("GisOpenGL: dispose");
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	g_debug("GritsOpenGL: dispose");
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	if (opengl->sm_source[0]) {
 		g_source_remove(opengl->sm_source[0]);
 		opengl->sm_source[0] = 0;
@@ -484,30 +484,30 @@ static void gis_opengl_dispose(GObject *_opengl)
 		g_source_remove(opengl->ue_source);
 		opengl->ue_source = 0;
 	}
-	G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_opengl);
+	G_OBJECT_CLASS(grits_opengl_parent_class)->dispose(_opengl);
 }
-static void gis_opengl_finalize(GObject *_opengl)
+static void grits_opengl_finalize(GObject *_opengl)
 {
-	g_debug("GisOpenGL: finalize");
-	GisOpenGL *opengl = GIS_OPENGL(_opengl);
+	g_debug("GritsOpenGL: finalize");
+	GritsOpenGL *opengl = GRITS_OPENGL(_opengl);
 	roam_sphere_free(opengl->sphere);
 	g_tree_destroy(opengl->objects);
 	g_mutex_free(opengl->objects_lock);
 	g_mutex_free(opengl->sphere_lock);
-	G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_opengl);
+	G_OBJECT_CLASS(grits_opengl_parent_class)->finalize(_opengl);
 }
-static void gis_opengl_class_init(GisOpenGLClass *klass)
+static void grits_opengl_class_init(GritsOpenGLClass *klass)
 {
-	g_debug("GisOpenGL: class_init");
+	g_debug("GritsOpenGL: class_init");
 	GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
-	gobject_class->finalize = gis_opengl_finalize;
-	gobject_class->dispose = gis_opengl_dispose;
-
-	GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass);
-	viewer_class->center_position   = gis_opengl_center_position;
-	viewer_class->project           = gis_opengl_project;
-	viewer_class->clear_height_func = gis_opengl_clear_height_func;
-	viewer_class->set_height_func   = gis_opengl_set_height_func;
-	viewer_class->add               = gis_opengl_add;
-	viewer_class->remove            = gis_opengl_remove;
+	gobject_class->finalize = grits_opengl_finalize;
+	gobject_class->dispose = grits_opengl_dispose;
+
+	GritsViewerClass *viewer_class = GRITS_VIEWER_CLASS(klass);
+	viewer_class->center_position   = grits_opengl_center_position;
+	viewer_class->project           = grits_opengl_project;
+	viewer_class->clear_height_func = grits_opengl_clear_height_func;
+	viewer_class->set_height_func   = grits_opengl_set_height_func;
+	viewer_class->add               = grits_opengl_add;
+	viewer_class->remove            = grits_opengl_remove;
 }
diff --git a/src/grits-opengl.h b/src/grits-opengl.h
index 0b5a9b6..0379509 100644
--- a/src/grits-opengl.h
+++ b/src/grits-opengl.h
@@ -15,27 +15,27 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_OPENGL_H__
-#define __GIS_OPENGL_H__
+#ifndef __GRITS_OPENGL_H__
+#define __GRITS_OPENGL_H__
 
 #include <glib-object.h>
 
 /* Type macros */
-#define GIS_TYPE_OPENGL            (gis_opengl_get_type())
-#define GIS_OPENGL(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_OPENGL, GisOpenGL))
-#define GIS_IS_OPENGL(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_OPENGL))
-#define GIS_OPENGL_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_OPENGL, GisOpenGLClass))
-#define GIS_IS_OPENGL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_OPENGL))
-#define GIS_OPENGL_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_OPENGL, GisOpenGLClass))
+#define GRITS_TYPE_OPENGL            (grits_opengl_get_type())
+#define GRITS_OPENGL(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_OPENGL, GritsOpenGL))
+#define GRITS_IS_OPENGL(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_OPENGL))
+#define GRITS_OPENGL_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_OPENGL, GritsOpenGLClass))
+#define GRITS_IS_OPENGL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_OPENGL))
+#define GRITS_OPENGL_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_OPENGL, GritsOpenGLClass))
 
-typedef struct _GisOpenGL      GisOpenGL;
-typedef struct _GisOpenGLClass GisOpenGLClass;
+typedef struct _GritsOpenGL      GritsOpenGL;
+typedef struct _GritsOpenGLClass GritsOpenGLClass;
 
 #include "grits-viewer.h"
 #include "roam.h"
 
-struct _GisOpenGL {
-	GisViewer parent_instance;
+struct _GritsOpenGL {
+	GritsViewer parent_instance;
 
 	/* instance members */
 	GTree      *objects;
@@ -49,15 +49,15 @@ struct _GisOpenGL {
 	gboolean    wireframe;
 };
 
-struct _GisOpenGLClass {
-	GisViewerClass parent_class;
+struct _GritsOpenGLClass {
+	GritsViewerClass parent_class;
 
 	/* class members */
 };
 
-GType gis_opengl_get_type(void);
+GType grits_opengl_get_type(void);
 
 /* Methods */
-GisViewer *gis_opengl_new(GisPlugins *plugins, GisPrefs *prefs);
+GritsViewer *grits_opengl_new(GritsPlugins *plugins, GritsPrefs *prefs);
 
 #endif
diff --git a/src/grits-plugin.c b/src/grits-plugin.c
index 6ceea39..144c713 100644
--- a/src/grits-plugin.c
+++ b/src/grits-plugin.c
@@ -16,22 +16,22 @@
  */
 
 /**
- * SECTION:gis-plugin
+ * SECTION:grits-plugin
  * @short_description: Plugin support
  *
- * A plugin in grits is a GObject which implements the GisPlugin interface.
+ * A plugin in grits is a GObject which implements the GritsPlugin interface.
  * Additionally, each plugin is compiled to a separate shared object and loaded
  * conditionally at runtime when the plugin is enabled. Each such shared object
- * should define a GisPluginConstructor() function named gis_plugin_NAME_new
- * which will be called when loading the plugin.
+ * should define a GritsPluginConstructor() function named
+ * grits_plugin_NAME_new which will be called when loading the plugin.
  *
  * Almost all grits functionality is provided by a set of plugins. Each plugin
  * can how however much it likes. The interface between plugins and the rest of
  * grits is intentionally very thin. Since grits is the library, plugins must
  * manually do everything. For instance, to draw something in the world, the
- * plugin must add an object to the viewer. Likewise, plugins need to register
- * callbacks on the viewer in order to receive updates, very little happens
- * automagically.
+ * plugin must add an object to the viewer. Likewise, plugins need to
+ * register callbacks on the viewer in order to receive updates, very little
+ * happens automagically.
  *
  * That being said, one thing that plugins do do automagically, is provide a
  * configuration area.  Since the plugin doesn't know what application is is
@@ -49,7 +49,7 @@
 /********************
  * Plugin interface *
  ********************/
-static void gis_plugin_base_init(gpointer g_class)
+static void grits_plugin_base_init(gpointer g_class)
 {
 	static gboolean is_initialized = FALSE;
 	if (!is_initialized) {
@@ -58,23 +58,23 @@ static void gis_plugin_base_init(gpointer g_class)
 	}
 }
 
-GType gis_plugin_get_type()
+GType grits_plugin_get_type()
 {
 	static GType type = 0;
 	if (type == 0) {
 		static const GTypeInfo info = {
-			sizeof(GisPluginInterface),
-			gis_plugin_base_init,
+			sizeof(GritsPluginInterface),
+			grits_plugin_base_init,
 			NULL,
 		};
 		type = g_type_register_static(G_TYPE_INTERFACE,
-				"GisPlugin", &info, 0);
+				"GritsPlugin", &info, 0);
 	}
 	return type;
 }
 
 /**
- * gis_plugin_get_name:
+ * grits_plugin_get_name:
  * @plugin: the plugin
  *
  * Get a short human readable name for a plugin, this is not necessarily the
@@ -82,30 +82,30 @@ GType gis_plugin_get_type()
  *
  * Returns: a short name for the plugin
  */
-const gchar *gis_plugin_get_name(GisPlugin *plugin)
+const gchar *grits_plugin_get_name(GritsPlugin *plugin)
 {
-	if (!GIS_IS_PLUGIN(plugin))
+	if (!GRITS_IS_PLUGIN(plugin))
 		return NULL;
-	return GIS_PLUGIN_GET_INTERFACE(plugin)->name;
+	return GRITS_PLUGIN_GET_INTERFACE(plugin)->name;
 }
 
 /**
- * gis_plugin_get_description:
+ * grits_plugin_get_description:
  * @plugin: the plugin
  *
  * Get a description of a plugin
  *
  * Returns: a description of the plugin
  */
-const gchar *gis_plugin_get_description(GisPlugin *plugin)
+const gchar *grits_plugin_get_description(GritsPlugin *plugin)
 {
-	if (!GIS_IS_PLUGIN(plugin))
+	if (!GRITS_IS_PLUGIN(plugin))
 		return NULL;
-	return GIS_PLUGIN_GET_INTERFACE(plugin)->description;
+	return GRITS_PLUGIN_GET_INTERFACE(plugin)->description;
 }
 
 /**
- * gis_plugin_get_config:
+ * grits_plugin_get_config:
  * @plugin: the plugin
  *
  * Each plugin can provide a configuration area. Applications using grits
@@ -114,11 +114,11 @@ const gchar *gis_plugin_get_description(GisPlugin *plugin)
  *
  * Returns: a configuration widget for the plugin
  */
-GtkWidget *gis_plugin_get_config(GisPlugin *plugin)
+GtkWidget *grits_plugin_get_config(GritsPlugin *plugin)
 {
-	if (!GIS_IS_PLUGIN(plugin))
+	if (!GRITS_IS_PLUGIN(plugin))
 		return NULL;
-	GisPluginInterface *iface = GIS_PLUGIN_GET_INTERFACE(plugin);
+	GritsPluginInterface *iface = GRITS_PLUGIN_GET_INTERFACE(plugin);
 	return iface->get_config ? iface->get_config(plugin) : NULL;
 }
 
@@ -128,23 +128,23 @@ GtkWidget *gis_plugin_get_config(GisPlugin *plugin)
  ***************/
 typedef struct {
 	gchar *name;
-	GisPlugin *plugin;
-} GisPluginStore;
+	GritsPlugin *plugin;
+} GritsPluginStore;
 
 /**
- * gis_plugins_new:
+ * grits_plugins_new:
  * @dir:   the directory to search for plugins in
- * @prefs: a #GisPrefs to save the state of plugins, or NULL
+ * @prefs: a #GritsPrefs to save the state of plugins, or NULL
  *
  * Create a new plugin source. If @prefs is not %NULL, the state of the plugins
  * will be saved when they are either enabled or disabled.
  *
  * Returns: the new plugin source
  */
-GisPlugins *gis_plugins_new(const gchar *dir, GisPrefs *prefs)
+GritsPlugins *grits_plugins_new(const gchar *dir, GritsPrefs *prefs)
 {
-	g_debug("GisPlugins: new - dir=%s", dir);
-	GisPlugins *plugins = g_new0(GisPlugins, 1);
+	g_debug("GritsPlugins: new - dir=%s", dir);
+	GritsPlugins *plugins = g_new0(GritsPlugins, 1);
 	plugins->prefs = prefs;
 	if (dir)
 		plugins->dir = g_strdup(dir);
@@ -152,17 +152,17 @@ GisPlugins *gis_plugins_new(const gchar *dir, GisPrefs *prefs)
 }
 
 /**
- * gis_plugins_free:
- * @plugins: the #GisPlugins to free
+ * grits_plugins_free:
+ * @plugins: the #GritsPlugins to free
  *
  * Free data used by a plugin source
  */
-void gis_plugins_free(GisPlugins *plugins)
+void grits_plugins_free(GritsPlugins *plugins)
 {
-	g_debug("GisPlugins: free");
+	g_debug("GritsPlugins: free");
 	for (GList *cur = plugins->plugins; cur; cur = cur->next) {
-		GisPluginStore *store = cur->data;
-		g_debug("GisPlugin: freeing %s refs=%d->%d", store->name,
+		GritsPluginStore *store = cur->data;
+		g_debug("GritsPlugin: freeing %s refs=%d->%d", store->name,
 			G_OBJECT(store->plugin)->ref_count,
 			G_OBJECT(store->plugin)->ref_count-1);
 		g_object_unref(store->plugin);
@@ -176,7 +176,7 @@ void gis_plugins_free(GisPlugins *plugins)
 }
 
 /**
- * gis_plugins_available:
+ * grits_plugins_available:
  * @plugins: the plugin source
  *
  * Search the plugin directory for shared objects which can be loaded as
@@ -184,9 +184,9 @@ void gis_plugins_free(GisPlugins *plugins)
  *
  * Returns: the list of available plugins
  */
-GList *gis_plugins_available(GisPlugins *plugins)
+GList *grits_plugins_available(GritsPlugins *plugins)
 {
-	g_debug("GisPlugins: available");
+	g_debug("GritsPlugins: available");
 	GList *list = NULL;
 	gchar *dirs[] = {plugins->dir, PLUGINSDIR};
 	g_debug("pluginsdir=%s", PLUGINSDIR);
@@ -218,31 +218,31 @@ GList *gis_plugins_available(GisPlugins *plugins)
 }
 
 /**
- * gis_plugins_load:
+ * grits_plugins_load:
  * @plugins: the plugins source
  * @name:    the name of the plugin to load
- * @viewer:  a #GisViewer to pass to the plugins constructor
- * @prefs:   a #GisPrefs to pass to the plugins constructor
+ * @viewer:  a #GritsViewer to pass to the plugins constructor
+ * @prefs:   a #GritsPrefs to pass to the plugins constructor
  *
  * @name should be the name of the shared object without the file extension.
- * This is the same as what is returned by gis_plugins_available().
+ * This is the same as what is returned by grits_plugins_available().
  *
- * When loading plugins, the @prefs argument is used, not the #GisPrefs stored
+ * When loading plugins, the @prefs argument is used, not the #GritsPrefs stored
  * in @plugins.
  *
  * Returns: the new plugin
  */
-GisPlugin *gis_plugins_load(GisPlugins *plugins, const char *name,
-		GisViewer *viewer, GisPrefs *prefs)
+GritsPlugin *grits_plugins_load(GritsPlugins *plugins, const char *name,
+		GritsViewer *viewer, GritsPrefs *prefs)
 {
-	g_debug("GisPlugins: load %s", name);
+	g_debug("GritsPlugins: load %s", name);
 	gchar *path = g_strdup_printf("%s/%s.%s", plugins->dir, name, G_MODULE_SUFFIX);
-	g_debug("GisPlugins: load - trying %s", path);
+	g_debug("GritsPlugins: load - trying %s", path);
 	if (!g_file_test(path, G_FILE_TEST_EXISTS)) {
 		g_free(path);
 		path = g_strdup_printf("%s/%s.%s", PLUGINSDIR, name, G_MODULE_SUFFIX);
 	}
-	g_debug("GisPlugins: load - trying %s", path);
+	g_debug("GritsPlugins: load - trying %s", path);
 	if (!g_file_test(path, G_FILE_TEST_EXISTS)) {
 		g_warning("Module %s not found", name);
 		g_free(path);
@@ -256,7 +256,7 @@ GisPlugin *gis_plugins_load(GisPlugins *plugins, const char *name,
 	}
 
 	gpointer constructor_ptr; // GCC 4.1 fix?
-	gchar *constructor_str = g_strconcat("gis_plugin_", name, "_new", NULL);
+	gchar *constructor_str = g_strconcat("grits_plugin_", name, "_new", NULL);
 	if (!g_module_symbol(module, constructor_str, &constructor_ptr)) {
 		g_warning("Unable to load symbol %s from %s: %s",
 				constructor_str, name, g_module_error());
@@ -265,9 +265,9 @@ GisPlugin *gis_plugins_load(GisPlugins *plugins, const char *name,
 		return NULL;
 	}
 	g_free(constructor_str);
-	GisPluginConstructor constructor = constructor_ptr;
+	GritsPluginConstructor constructor = constructor_ptr;
 
-	GisPluginStore *store = g_new0(GisPluginStore, 1);
+	GritsPluginStore *store = g_new0(GritsPluginStore, 1);
 	store->name = g_strdup(name);
 	store->plugin = constructor(viewer, prefs);
 	plugins->plugins = g_list_prepend(plugins->plugins, store);
@@ -275,47 +275,47 @@ GisPlugin *gis_plugins_load(GisPlugins *plugins, const char *name,
 }
 
 /**
- * gis_plugins_enable:
+ * grits_plugins_enable:
  * @plugins: the plugins source
  * @name:    the name of the plugin to load
- * @viewer:  a #GisViewer to pass to the plugins constructor
- * @prefs:   a #GisPrefs to pass to the plugins constructor
+ * @viewer:  a #GritsViewer to pass to the plugins constructor
+ * @prefs:   a #GritsPrefs to pass to the plugins constructor
  *
- * Load a plugin and save it's loaded/unloaded state in the #GisPrefs stored in
+ * Load a plugin and save it's loaded/unloaded state in the #GritsPrefs stored in
  * #plugins.
  *
- * See also: gis_plugins_load()
+ * See also: grits_plugins_load()
  *
  * Returns: the new plugin
  */
-GisPlugin *gis_plugins_enable(GisPlugins *plugins, const char *name,
-		GisViewer *viewer, GisPrefs *prefs)
+GritsPlugin *grits_plugins_enable(GritsPlugins *plugins, const char *name,
+		GritsViewer *viewer, GritsPrefs *prefs)
 {
-	GisPlugin *plugin = gis_plugins_load(plugins, name, viewer, prefs);
-	gis_prefs_set_boolean_v(plugins->prefs, "plugins", name, TRUE);
+	GritsPlugin *plugin = grits_plugins_load(plugins, name, viewer, prefs);
+	grits_prefs_set_boolean_v(plugins->prefs, "plugins", name, TRUE);
 	return plugin;
 }
 
 /**
- * gis_plugins_load_enabled:
+ * grits_plugins_load_enabled:
  * @plugins: the plugins source
- * @viewer:  a #GisViewer to pass to the plugins constructor
- * @prefs:   a #GisPrefs to pass to the plugins constructor
+ * @viewer:  a #GritsViewer to pass to the plugins constructor
+ * @prefs:   a #GritsPrefs to pass to the plugins constructor
  *
  * Load all enabled which have previously been enabled.
  *
- * See also: gis_plugins_load()
+ * See also: grits_plugins_load()
  *
  * Returns: a list of all loaded plugins
  */
-GList *gis_plugins_load_enabled(GisPlugins *plugins,
-		GisViewer *viewer, GisPrefs *prefs)
+GList *grits_plugins_load_enabled(GritsPlugins *plugins,
+		GritsViewer *viewer, GritsPrefs *prefs)
 {
 	GList *loaded = NULL;
-	for (GList *cur = gis_plugins_available(plugins); cur; cur = cur->next) {
+	for (GList *cur = grits_plugins_available(plugins); cur; cur = cur->next) {
 		gchar *name = cur->data;
-		if (gis_prefs_get_boolean_v(plugins->prefs, "plugins", name, NULL)) {
-			GisPlugin *plugin = gis_plugins_load(plugins, name, viewer, prefs);
+		if (grits_prefs_get_boolean_v(plugins->prefs, "plugins", name, NULL)) {
+			GritsPlugin *plugin = grits_plugins_load(plugins, name, viewer, prefs);
 			loaded = g_list_prepend(loaded, plugin);
 		}
 	}
@@ -323,7 +323,7 @@ GList *gis_plugins_load_enabled(GisPlugins *plugins,
 }
 
 /**
- * gis_plugins_unload:
+ * grits_plugins_unload:
  * @plugins: the plugins source
  * @name:    the name of the plugin to unload
  *
@@ -331,11 +331,11 @@ GList *gis_plugins_load_enabled(GisPlugins *plugins,
  *
  * Returns: %FALSE
  */
-gboolean gis_plugins_unload(GisPlugins *plugins, const char *name)
+gboolean grits_plugins_unload(GritsPlugins *plugins, const char *name)
 {
-	g_debug("GisPlugins: unload %s", name);
+	g_debug("GritsPlugins: unload %s", name);
 	for (GList *cur = plugins->plugins; cur; cur = cur->next) {
-		GisPluginStore *store = cur->data;
+		GritsPluginStore *store = cur->data;
 		if (g_str_equal(store->name, name)) {
 			g_object_unref(store->plugin);
 			g_free(store->name);
@@ -347,41 +347,41 @@ gboolean gis_plugins_unload(GisPlugins *plugins, const char *name)
 }
 
 /**
- * gis_plugins_disable:
+ * grits_plugins_disable:
  * @plugins: the plugins source
  * @name:    the name of the plugin to unload
  *
- * Unload a plugin and save it's loaded/unloaded state in the #GisPrefs stored
+ * Unload a plugin and save it's loaded/unloaded state in the #GritsPrefs stored
  * in #plugins.
  *
- * See also: gis_plugins_unload()
+ * See also: grits_plugins_unload()
  *
  * Returns: %FALSE
  */
-gboolean gis_plugins_disable(GisPlugins *plugins, const char *name)
+gboolean grits_plugins_disable(GritsPlugins *plugins, const char *name)
 {
-	gis_prefs_set_boolean_v(plugins->prefs, "plugins", name, FALSE);
-	gis_plugins_unload(plugins, name);
+	grits_prefs_set_boolean_v(plugins->prefs, "plugins", name, FALSE);
+	grits_plugins_unload(plugins, name);
 	return FALSE;
 }
 
 /**
- * gis_plugins_foreach:
+ * grits_plugins_foreach:
  * @plugins:   the plugins source
  * @callback:  a function to call on each plugin
  * @user_data: user data to pass to the function
  *
  * Iterate over all plugins loaded by the plugins source
  */
-void gis_plugins_foreach(GisPlugins *plugins, GCallback _callback, gpointer user_data)
+void grits_plugins_foreach(GritsPlugins *plugins, GCallback _callback, gpointer user_data)
 {
-	g_debug("GisPlugins: foreach");
+	g_debug("GritsPlugins: foreach");
 	if (plugins == NULL)
 		return;
-	typedef void (*CBFunc)(GisPlugin *, const gchar *, gpointer);
+	typedef void (*CBFunc)(GritsPlugin *, const gchar *, gpointer);
 	CBFunc callback = (CBFunc)_callback;
 	for (GList *cur = plugins->plugins; cur; cur = cur->next) {
-		GisPluginStore *store = cur->data;
+		GritsPluginStore *store = cur->data;
 		callback(store->plugin, store->name, user_data);
 	}
 }
diff --git a/src/grits-plugin.h b/src/grits-plugin.h
index 41c6b97..780a16a 100644
--- a/src/grits-plugin.h
+++ b/src/grits-plugin.h
@@ -15,8 +15,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_PLUGIN_H__
-#define __GIS_PLUGIN_H__
+#ifndef __GRITS_PLUGIN_H__
+#define __GRITS_PLUGIN_H__
 
 #include <glib-object.h>
 #include <gtk/gtk.h>
@@ -24,15 +24,15 @@
 /********************
  * Plugin interface *
  ********************/
-#define GIS_TYPE_PLUGIN                (gis_plugin_get_type())
-#define GIS_PLUGIN(obj)                (G_TYPE_CHECK_INSTANCE_CAST   ((obj),  GIS_TYPE_PLUGIN, GisPlugin))
-#define GIS_IS_PLUGIN(obj)             (G_TYPE_CHECK_INSTANCE_TYPE   ((obj),  GIS_TYPE_PLUGIN))
-#define GIS_PLUGIN_GET_INTERFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE((inst), GIS_TYPE_PLUGIN, GisPluginInterface))
+#define GRITS_TYPE_PLUGIN                (grits_plugin_get_type())
+#define GRITS_PLUGIN(obj)                (G_TYPE_CHECK_INSTANCE_CAST   ((obj),  GRITS_TYPE_PLUGIN, GritsPlugin))
+#define GRITS_IS_PLUGIN(obj)             (G_TYPE_CHECK_INSTANCE_TYPE   ((obj),  GRITS_TYPE_PLUGIN))
+#define GRITS_PLUGIN_GET_INTERFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE((inst), GRITS_TYPE_PLUGIN, GritsPluginInterface))
 
-typedef struct _GisPlugin          GisPlugin;
-typedef struct _GisPluginInterface GisPluginInterface;
+typedef struct _GritsPlugin          GritsPlugin;
+typedef struct _GritsPluginInterface GritsPluginInterface;
 
-struct _GisPluginInterface
+struct _GritsPluginInterface
 {
 	GTypeInterface parent_iface;
 
@@ -41,63 +41,63 @@ struct _GisPluginInterface
 	const gchar *description;
 
 	/* Virtual functions */
-	GtkWidget *(*get_config)(GisPlugin *plugin);
+	GtkWidget *(*get_config)(GritsPlugin *plugin);
 };
 
-GType gis_plugin_get_type();
+GType grits_plugin_get_type();
 
 /* Methods */
-const gchar *gis_plugin_get_name(GisPlugin *plugin);
+const gchar *grits_plugin_get_name(GritsPlugin *plugin);
 
-const gchar *gis_plugin_get_description(GisPlugin *plugin);
+const gchar *grits_plugin_get_description(GritsPlugin *plugin);
 
-GtkWidget *gis_plugin_get_config(GisPlugin *plugin);
+GtkWidget *grits_plugin_get_config(GritsPlugin *plugin);
 
 /***************
  * Plugins API *
  ***************/
-typedef struct _GisPlugins GisPlugins;
+typedef struct _GritsPlugins GritsPlugins;
 
 #include "grits-viewer.h"
 #include "grits-prefs.h"
 
 /**
- * GisPluginConstructor:
+ * GritsPluginConstructor:
  * @viewer: the viewer the plugin is associated with
  * @prefs:  preferences the plugin can use for storing informtion
  *
  * Create a new instance of a plugin. Each plugin should supply a constructor named
- * gis_plugin_NAME_new in it's shared object.
+ * grits_plugin_NAME_new in it's shared object.
  *
  * Returns: the new plugin
  */
-typedef GisPlugin *(*GisPluginConstructor)(GisViewer *viewer, GisPrefs *prefs);
+typedef GritsPlugin *(*GritsPluginConstructor)(GritsViewer *viewer, GritsPrefs *prefs);
 
-struct _GisPlugins {
-	gchar    *dir;
-	GList    *plugins;
-	GisPrefs *prefs;
+struct _GritsPlugins {
+	gchar      *dir;
+	GList      *plugins;
+	GritsPrefs *prefs;
 };
 
-GisPlugins *gis_plugins_new(const gchar *dir, GisPrefs *prefs);
+GritsPlugins *grits_plugins_new(const gchar *dir, GritsPrefs *prefs);
 
-void gis_plugins_free();
+void grits_plugins_free();
 
-GList *gis_plugins_available(GisPlugins *plugins);
+GList *grits_plugins_available(GritsPlugins *plugins);
 
-GisPlugin *gis_plugins_load(GisPlugins *plugins, const char *name,
-		GisViewer *viewer, GisPrefs *prefs);
+GritsPlugin *grits_plugins_load(GritsPlugins *plugins, const char *name,
+		GritsViewer *viewer, GritsPrefs *prefs);
 
-GisPlugin *gis_plugins_enable(GisPlugins *plugins, const char *name,
-		GisViewer *viewer, GisPrefs *prefs);
+GritsPlugin *grits_plugins_enable(GritsPlugins *plugins, const char *name,
+		GritsViewer *viewer, GritsPrefs *prefs);
 
-GList *gis_plugins_load_enabled(GisPlugins *plugins,
-		GisViewer *viewer, GisPrefs *prefs);
+GList *grits_plugins_load_enabled(GritsPlugins *plugins,
+		GritsViewer *viewer, GritsPrefs *prefs);
 
-gboolean gis_plugins_disable(GisPlugins *plugins, const char *name);
+gboolean grits_plugins_disable(GritsPlugins *plugins, const char *name);
 
-gboolean gis_plugins_unload(GisPlugins *plugins, const char *name);
+gboolean grits_plugins_unload(GritsPlugins *plugins, const char *name);
 
-void gis_plugins_foreach(GisPlugins *plugins, GCallback callback, gpointer user_data);
+void grits_plugins_foreach(GritsPlugins *plugins, GCallback callback, gpointer user_data);
 
 #endif
diff --git a/src/grits-prefs.c b/src/grits-prefs.c
index 4e1b064..80a1d49 100644
--- a/src/grits-prefs.c
+++ b/src/grits-prefs.c
@@ -16,13 +16,13 @@
  */
 
 /**
- * SECTION:gis-prefs
+ * SECTION:grits-prefs
  * @short_description: Persistent preference handing
  *
- * #GisPrefs is used to store and access preferences in grits. It is mostly a
+ * #GritsPrefs is used to store and access preferences in grits. It is mostly a
  * wrapper around a #GKeyFile. Preferences can be stored for the application
  * using grits, but may also be stored by grits itself. An example of this are
- * whether grits is in online or offline mode. Many #GisPlugin<!-- -->s also
+ * whether grits is in online or offline mode. Many #GritsPlugin<!-- -->s also
  * store preferences.
  *
  * There are two variants of preference functions. The normal variant takes
@@ -46,19 +46,19 @@ static guint signals[NUM_SIGNALS];
  * Methods *
  ***********/
 /**
- * gis_prefs_new:
+ * grits_prefs_new:
  * @config:   the path to the config file
  * @defaults: the path to the default config file
  *
  * Create a new preference object for the given @config. If the config does not
  * exist the @defaults file is loaded.
  *
- * Returns: the new #GisPrefs
+ * Returns: the new #GritsPrefs
  */
-GisPrefs *gis_prefs_new(const gchar *config, const gchar *defaults)
+GritsPrefs *grits_prefs_new(const gchar *config, const gchar *defaults)
 {
-	g_debug("GisPrefs: new - %s, %s", config, defaults);
-	GisPrefs *prefs = g_object_new(GIS_TYPE_PREFS, NULL);
+	g_debug("GritsPrefs: new - %s, %s", config, defaults);
+	GritsPrefs *prefs = g_object_new(GRITS_TYPE_PREFS, NULL);
 	if (config)
 		prefs->key_path = g_strdup(config);
 	else
@@ -68,13 +68,13 @@ GisPrefs *gis_prefs_new(const gchar *config, const gchar *defaults)
 	g_key_file_load_from_file(prefs->key_file, prefs->key_path,
 			G_KEY_FILE_KEEP_COMMENTS, &error);
 	if (error && defaults) {
-		g_debug("GisPrefs: new - Trying defaults");
+		g_debug("GritsPrefs: new - Trying defaults");
 		g_clear_error(&error);
 		g_key_file_load_from_file(prefs->key_file, defaults,
 				G_KEY_FILE_KEEP_COMMENTS, &error);
 	}
 	if (error) {
-		g_debug("GisPrefs: new - Trying GIS defaults");
+		g_debug("GritsPrefs: new - Trying GRITS defaults");
 		g_clear_error(&error);
 		gchar *tmp = g_build_filename(PKGDATADIR, "defaults.ini", NULL);
 		g_key_file_load_from_file(prefs->key_file, tmp,
@@ -82,36 +82,36 @@ GisPrefs *gis_prefs_new(const gchar *config, const gchar *defaults)
 		g_free(tmp);
 	}
 	if (error) {
-		g_debug("GisPrefs: new - Unable to load key file `%s': %s",
+		g_debug("GritsPrefs: new - Unable to load key file `%s': %s",
 			prefs->key_path, error->message);
 	}
-	g_debug("GisPrefs: new - using %s", prefs->key_path);
+	g_debug("GritsPrefs: new - using %s", prefs->key_path);
 	return prefs;
 }
 
 #define make_pref_type(name, c_type, g_type)                                         \
-c_type gis_prefs_get_##name##_v(GisPrefs *prefs,                                     \
+c_type grits_prefs_get_##name##_v(GritsPrefs *prefs,                                 \
 		const gchar *group, const gchar *key, GError **_error)               \
 {                                                                                    \
 	GError *error = NULL;                                                        \
 	c_type value = g_key_file_get_##name(prefs->key_file, group, key, &error);   \
 	if (error && error->code != G_KEY_FILE_ERROR_GROUP_NOT_FOUND &&              \
 	             error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND)                  \
-		g_warning("GisPrefs: get_"#name" - error getting key %s: %s\n",      \
+		g_warning("GritsPrefs: get_"#name" - error getting key %s: %s\n",    \
 				key, error->message);                                \
 	if (error && _error)                                                         \
 		*_error = error;                                                     \
 	return value;                                                                \
 }                                                                                    \
-c_type gis_prefs_get_##name(GisPrefs *prefs, const gchar *key, GError **error)       \
+c_type grits_prefs_get_##name(GritsPrefs *prefs, const gchar *key, GError **error)   \
 {                                                                                    \
 	gchar **keys  = g_strsplit(key, "/", 2);                                     \
-	c_type value = gis_prefs_get_##name##_v(prefs, keys[0], keys[1], error);     \
+	c_type value = grits_prefs_get_##name##_v(prefs, keys[0], keys[1], error);   \
 	g_strfreev(keys);                                                            \
 	return value;                                                                \
 }                                                                                    \
                                                                                      \
-void gis_prefs_set_##name##_v(GisPrefs *prefs,                                       \
+void grits_prefs_set_##name##_v(GritsPrefs *prefs,                                   \
 		const gchar *group, const gchar *key, const c_type value)            \
 {                                                                                    \
 	g_key_file_set_##name(prefs->key_file, group, key, value);                   \
@@ -120,10 +120,10 @@ void gis_prefs_set_##name##_v(GisPrefs *prefs,
 			all, g_type, &value);                                        \
 	g_free(all);                                                                 \
 }                                                                                    \
-void gis_prefs_set_##name(GisPrefs *prefs, const gchar *key, const c_type value)     \
+void grits_prefs_set_##name(GritsPrefs *prefs, const gchar *key, const c_type value) \
 {                                                                                    \
 	gchar **keys = g_strsplit(key, "/", 2);                                      \
-	gis_prefs_set_##name##_v(prefs, keys[0], keys[1], value);                    \
+	grits_prefs_set_##name##_v(prefs, keys[0], keys[1], value);                  \
 	g_strfreev(keys);                                                            \
 }                                                                                    \
 
@@ -136,16 +136,16 @@ make_pref_type(double,  gdouble,  G_TYPE_DOUBLE)
 /****************
  * GObject code *
  ****************/
-G_DEFINE_TYPE(GisPrefs, gis_prefs, G_TYPE_OBJECT);
-static void gis_prefs_init(GisPrefs *prefs)
+G_DEFINE_TYPE(GritsPrefs, grits_prefs, G_TYPE_OBJECT);
+static void grits_prefs_init(GritsPrefs *prefs)
 {
-	g_debug("GisPrefs: init");
+	g_debug("GritsPrefs: init");
 	prefs->key_file = g_key_file_new();
 }
-static void gis_prefs_dispose(GObject *_prefs)
+static void grits_prefs_dispose(GObject *_prefs)
 {
-	g_debug("GisPrefs: dispose");
-	GisPrefs *prefs = GIS_PREFS(_prefs);
+	g_debug("GritsPrefs: dispose");
+	GritsPrefs *prefs = GRITS_PREFS(_prefs);
 	if (prefs->key_file) {
 		gsize length;
 		gchar *dir = g_path_get_dirname(prefs->key_path);
@@ -158,16 +158,16 @@ static void gis_prefs_dispose(GObject *_prefs)
 		g_free(data);
 		prefs->key_file = NULL;
 	}
-	G_OBJECT_CLASS(gis_prefs_parent_class)->dispose(_prefs);
+	G_OBJECT_CLASS(grits_prefs_parent_class)->dispose(_prefs);
 }
-static void gis_prefs_class_init(GisPrefsClass *klass)
+static void grits_prefs_class_init(GritsPrefsClass *klass)
 {
-	g_debug("GisPrefs: class_init");
+	g_debug("GritsPrefs: class_init");
 	GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
-	gobject_class->dispose = gis_prefs_dispose;
+	gobject_class->dispose = grits_prefs_dispose;
 
 	/**
-	 * GisPrefs::pref-changed:
+	 * GritsPrefs::pref-changed:
 	 * @prefs: the preference store.
 	 * @key:   the key to the preference.
 	 * @type:  the type of the preference that changed.
diff --git a/src/grits-prefs.h b/src/grits-prefs.h
index 9949568..b49c209 100644
--- a/src/grits-prefs.h
+++ b/src/grits-prefs.h
@@ -15,23 +15,23 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_PREFS_H__
-#define __GIS_PREFS_H__
+#ifndef __GRITS_PREFS_H__
+#define __GRITS_PREFS_H__
 
 #include <glib-object.h>
 
 /* Type macros */
-#define GIS_TYPE_PREFS            (gis_prefs_get_type())
-#define GIS_PREFS(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PREFS, GisPrefs))
-#define GIS_IS_PREFS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PREFS))
-#define GIS_PREFS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PREFS, GisPrefsClass))
-#define GIS_IS_PREFS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PREFS))
-#define GIS_PREFS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PREFS, GisPrefsClass))
+#define GRITS_TYPE_PREFS            (grits_prefs_get_type())
+#define GRITS_PREFS(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PREFS, GritsPrefs))
+#define GRITS_IS_PREFS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PREFS))
+#define GRITS_PREFS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PREFS, GritsPrefsClass))
+#define GRITS_IS_PREFS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PREFS))
+#define GRITS_PREFS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PREFS, GritsPrefsClass))
 
-typedef struct _GisPrefs      GisPrefs;
-typedef struct _GisPrefsClass GisPrefsClass;
+typedef struct _GritsPrefs      GritsPrefs;
+typedef struct _GritsPrefsClass GritsPrefsClass;
 
-struct _GisPrefs {
+struct _GritsPrefs {
 	GObject parent_instance;
 
 	/* instance members */
@@ -39,34 +39,34 @@ struct _GisPrefs {
 	GKeyFile *key_file;
 };
 
-struct _GisPrefsClass {
+struct _GritsPrefsClass {
 	GObjectClass parent_class;
 	
 	/* class members */
 };
 
-GType gis_prefs_get_type(void);
+GType grits_prefs_get_type(void);
 
 /* Methods */
-GisPrefs *gis_prefs_new(const gchar *config, const gchar *defaults);
+GritsPrefs *grits_prefs_new(const gchar *config, const gchar *defaults);
 
-gchar    *gis_prefs_get_string   (GisPrefs *prefs, const gchar *key, GError **error);
-gboolean  gis_prefs_get_boolean  (GisPrefs *prefs, const gchar *key, GError **error);
-gint      gis_prefs_get_integer  (GisPrefs *prefs, const gchar *key, GError **error);
-gdouble   gis_prefs_get_double   (GisPrefs *prefs, const gchar *key, GError **error);
+gchar    *grits_prefs_get_string   (GritsPrefs *prefs, const gchar *key, GError **error);
+gboolean  grits_prefs_get_boolean  (GritsPrefs *prefs, const gchar *key, GError **error);
+gint      grits_prefs_get_integer  (GritsPrefs *prefs, const gchar *key, GError **error);
+gdouble   grits_prefs_get_double   (GritsPrefs *prefs, const gchar *key, GError **error);
 
-gchar    *gis_prefs_get_string_v (GisPrefs *prefs, const gchar *group, const gchar *key, GError **error);
-gboolean  gis_prefs_get_boolean_v(GisPrefs *prefs, const gchar *group, const gchar *key, GError **error);
-gint      gis_prefs_get_integer_v(GisPrefs *prefs, const gchar *group, const gchar *key, GError **error);
-gdouble   gis_prefs_get_double_v (GisPrefs *prefs, const gchar *group, const gchar *key, GError **error);
+gchar    *grits_prefs_get_string_v (GritsPrefs *prefs, const gchar *group, const gchar *key, GError **error);
+gboolean  grits_prefs_get_boolean_v(GritsPrefs *prefs, const gchar *group, const gchar *key, GError **error);
+gint      grits_prefs_get_integer_v(GritsPrefs *prefs, const gchar *group, const gchar *key, GError **error);
+gdouble   grits_prefs_get_double_v (GritsPrefs *prefs, const gchar *group, const gchar *key, GError **error);
 
-void      gis_prefs_set_string   (GisPrefs *prefs, const gchar *key, const gchar *string);
-void      gis_prefs_set_boolean  (GisPrefs *prefs, const gchar *key, gboolean value);
-void      gis_prefs_set_integer  (GisPrefs *prefs, const gchar *key, gint value);
-void      gis_prefs_set_double   (GisPrefs *prefs, const gchar *key, gdouble value);
+void      grits_prefs_set_string   (GritsPrefs *prefs, const gchar *key, const gchar *string);
+void      grits_prefs_set_boolean  (GritsPrefs *prefs, const gchar *key, gboolean value);
+void      grits_prefs_set_integer  (GritsPrefs *prefs, const gchar *key, gint value);
+void      grits_prefs_set_double   (GritsPrefs *prefs, const gchar *key, gdouble value);
 
-void      gis_prefs_set_string_v (GisPrefs *prefs, const gchar *group, const gchar *key, const gchar *string);
-void      gis_prefs_set_boolean_v(GisPrefs *prefs, const gchar *group, const gchar *key, gboolean value);
-void      gis_prefs_set_integer_v(GisPrefs *prefs, const gchar *group, const gchar *key, gint value);
-void      gis_prefs_set_double_v (GisPrefs *prefs, const gchar *group, const gchar *key, gdouble value);
+void      grits_prefs_set_string_v (GritsPrefs *prefs, const gchar *group, const gchar *key, const gchar *string);
+void      grits_prefs_set_boolean_v(GritsPrefs *prefs, const gchar *group, const gchar *key, gboolean value);
+void      grits_prefs_set_integer_v(GritsPrefs *prefs, const gchar *group, const gchar *key, gint value);
+void      grits_prefs_set_double_v (GritsPrefs *prefs, const gchar *group, const gchar *key, gdouble value);
 #endif
diff --git a/src/grits-test.c b/src/grits-test.c
index 43d014b..1890f81 100644
--- a/src/grits-test.c
+++ b/src/grits-test.c
@@ -22,16 +22,16 @@
 
 #include "grits.h"
 
-GisPrefs   *prefs   = NULL;
-GisPlugins *plugins = NULL;
-GisViewer  *viewer  = NULL;
+GritsPrefs   *prefs   = NULL;
+GritsPlugins *plugins = NULL;
+GritsViewer  *viewer  = NULL;
 
 /*************
  * Callbacks *
  *************/
-static gboolean gis_shutdown(GtkWidget *window)
+static gboolean grits_shutdown(GtkWidget *window)
 {
-	gis_plugins_free(plugins);
+	grits_plugins_free(plugins);
 	g_object_unref(prefs);
 	gtk_widget_destroy(window);
 
@@ -43,20 +43,20 @@ static gboolean gis_shutdown(GtkWidget *window)
 }
 static gboolean on_delete(GtkWidget *widget, GdkEvent *event, gpointer data)
 {
-	return gis_shutdown(widget);
+	return grits_shutdown(widget);
 }
 static gboolean on_key_press(GtkWidget *widget, GdkEventKey *event,
 		gpointer window)
 {
 	if (event->keyval == GDK_q)
-		return gis_shutdown(widget);
+		return grits_shutdown(widget);
 	return FALSE;
 }
-static void load_plugin(GisPlugins *plugins, gchar *name,
-		GisViewer *viewer, GisPrefs *prefs, GtkNotebook *notebook)
+static void load_plugin(GritsPlugins *plugins, gchar *name,
+		GritsViewer *viewer, GritsPrefs *prefs, GtkNotebook *notebook)
 {
-	GisPlugin *plugin = gis_plugins_load(plugins, name, viewer, prefs);
-	GtkWidget *config = gis_plugin_get_config(plugin);
+	GritsPlugin *plugin = grits_plugins_load(plugins, name, viewer, prefs);
+	GtkWidget *config = grits_plugin_get_config(plugin);
 	gtk_notebook_append_page(notebook, config, gtk_label_new(name));
 }
 
@@ -70,9 +70,9 @@ int main(int argc, char **argv)
 	gtk_init(&argc, &argv);
 	gtk_gl_init(&argc, &argv);
 
-	prefs   = gis_prefs_new(NULL, NULL);
-	plugins = gis_plugins_new(g_getenv("GIS_PLUGIN_PATH"), prefs);
-	viewer  = gis_opengl_new(plugins, prefs);
+	prefs   = grits_prefs_new(NULL, NULL);
+	plugins = grits_plugins_new(g_getenv("GRITS_PLUGIN_PATH"), prefs);
+	viewer  = grits_opengl_new(plugins, prefs);
 
 	gdk_threads_enter();
 	GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
@@ -87,7 +87,7 @@ int main(int argc, char **argv)
 	gtk_widget_show_all(window);
 
 	/* Configurable stuff */
-	gis_viewer_set_offline(viewer, TRUE);
+	grits_viewer_set_offline(viewer, TRUE);
 	load_plugin(plugins, "elev",  viewer, prefs, GTK_NOTEBOOK(config));
 	load_plugin(plugins, "env",   viewer, prefs, GTK_NOTEBOOK(config));
 	//load_plugin(plugins, "map",   viewer, prefs, GTK_NOTEBOOK(config));
diff --git a/src/grits-util.c b/src/grits-util.c
index 634f132..a792014 100644
--- a/src/grits-util.c
+++ b/src/grits-util.c
@@ -16,7 +16,7 @@
  */
 
 /**
- * SECTION:gis-util
+ * SECTION:grits-util
  * @short_description: Geographic utilities
  *
  * Miscellaneous utility functions, these deal mostly with coordinate
@@ -74,10 +74,10 @@
 #include "grits-util.h"
 
 /************
- * GisPoint *
+ * GritsPoint *
  ************/
 /**
- * gis_point_set_lle:
+ * grits_point_set_lle:
  * @point: the point to modify
  * @lat:   the new latitude
  * @lon:   the new longitude
@@ -85,7 +85,7 @@
  *
  * Set the latitude, longitude, and elevation for a point.
  */
-void gis_point_set_lle(GisPoint *point, gdouble lat, gdouble lon, gdouble elev)
+void grits_point_set_lle(GritsPoint *point, gdouble lat, gdouble lon, gdouble elev)
 {
 	point->lat  = lat;
 	point->lon  = lon;
@@ -93,11 +93,11 @@ void gis_point_set_lle(GisPoint *point, gdouble lat, gdouble lon, gdouble elev)
 }
 
 
-/*************
- * GisBounds *
- *************/
+/***************
+ * GritsBounds *
+ ***************/
 /**
- * gis_bounds_set_bounds:
+ * grits_bounds_set_bounds:
  * @n: the north edge
  * @s: the south edge
  * @e: the east edge
@@ -105,7 +105,7 @@ void gis_point_set_lle(GisPoint *point, gdouble lat, gdouble lon, gdouble elev)
  *
  * Set the north, south, east, and west edges of the bounding box
  */
-void gis_bounds_set_bounds(GisBounds *bounds,
+void grits_bounds_set_bounds(GritsBounds *bounds,
 		gdouble n, gdouble s, gdouble e, gdouble w)
 {
 	bounds->n = n;
diff --git a/src/grits-util.h b/src/grits-util.h
index ccc7558..0771541 100644
--- a/src/grits-util.h
+++ b/src/grits-util.h
@@ -15,8 +15,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_UTIL_H__
-#define __GIS_UTIL_H__
+#ifndef __GRITS_UTIL_H__
+#define __GRITS_UTIL_H__
 
 #include <glib.h>
 
@@ -150,22 +150,22 @@
  * Datatypes *
  *************/
 
-/* GisPoint */
-typedef struct _GisPoint GisPoint;
-struct _GisPoint {
+/* GritsPoint */
+typedef struct _GritsPoint GritsPoint;
+struct _GritsPoint {
 	gdouble lat, lon, elev;
 };
 
-void gis_point_set_lle(GisPoint *point,
+void grits_point_set_lle(GritsPoint *point,
 		gdouble lat, gdouble lon, gdouble elev);
 
-/* GisBounds */
-typedef struct _GisBounds GisBounds;
-struct _GisBounds {
+/* GritsBounds */
+typedef struct _GritsBounds GritsBounds;
+struct _GritsBounds {
 	gdouble n, s, e, w;
 };
 
-void gis_bounds_set_bounds(GisBounds *bounds,
+void grits_bounds_set_bounds(GritsBounds *bounds,
 		gdouble n, gdouble s, gdouble e, gdouble w);
 
 
@@ -175,7 +175,7 @@ void gis_bounds_set_bounds(GisBounds *bounds,
 /**
  * FOV_DIST:
  *
- * Used by GisOpenGL to set up the drawing window
+ * Used by GritsOpenGL to set up the drawing window
  */
 #define FOV_DIST   2000.0
 
diff --git a/src/grits-viewer.c b/src/grits-viewer.c
index 767b919..3a7827e 100644
--- a/src/grits-viewer.c
+++ b/src/grits-viewer.c
@@ -16,10 +16,10 @@
  */
 
 /**
- * SECTION:gis-viewer
+ * SECTION:grits-viewer
  * @short_description: Virtual globe base class
  *
- * #GisViewer is the base class for the virtual globe widget. It handles
+ * #GritsViewer is the base class for the virtual globe widget. It handles
  * everything not directly related to drawing the globe. Plugins and
  * applications using the viewer should normally talk to the viewer and not care
  * how it is implemented. 
@@ -52,7 +52,7 @@ static guint signals[NUM_SIGNALS];
  * Helpers *
  ***********/
 /* Misc helpers */
-static void _gis_viewer_fix_location(GisViewer *viewer)
+static void _grits_viewer_fix_location(GritsViewer *viewer)
 {
 	while (viewer->location[0] <  -90) viewer->location[0] += 180;
 	while (viewer->location[0] >   90) viewer->location[0] -= 180;
@@ -62,30 +62,30 @@ static void _gis_viewer_fix_location(GisViewer *viewer)
 }
 
 /* Signal helpers */
-static void _gis_viewer_emit_location_changed(GisViewer *viewer)
+static void _grits_viewer_emit_location_changed(GritsViewer *viewer)
 {
 	g_signal_emit(viewer, signals[SIG_LOCATION_CHANGED], 0,
 			viewer->location[0],
 			viewer->location[1],
 			viewer->location[2]);
 }
-static void _gis_viewer_emit_rotation_changed(GisViewer *viewer)
+static void _grits_viewer_emit_rotation_changed(GritsViewer *viewer)
 {
 	g_signal_emit(viewer, signals[SIG_ROTATION_CHANGED], 0,
 			viewer->rotation[0],
 			viewer->rotation[1],
 			viewer->rotation[2]);
 }
-static void _gis_viewer_emit_time_changed(GisViewer *viewer)
+static void _grits_viewer_emit_time_changed(GritsViewer *viewer)
 {
 	g_signal_emit(viewer, signals[SIG_TIME_CHANGED], 0,
 			viewer->time);
 }
-static void _gis_viewer_emit_refresh(GisViewer *viewer)
+static void _grits_viewer_emit_refresh(GritsViewer *viewer)
 {
 	g_signal_emit(viewer, signals[SIG_REFRESH], 0);
 }
-static void _gis_viewer_emit_offline(GisViewer *viewer)
+static void _grits_viewer_emit_offline(GritsViewer *viewer)
 {
 	g_signal_emit(viewer, signals[SIG_OFFLINE], 0,
 			viewer->offline);
@@ -94,92 +94,92 @@ static void _gis_viewer_emit_offline(GisViewer *viewer)
 /*************
  * Callbacks *
  *************/
-static gboolean on_key_press(GisViewer *viewer, GdkEventKey *event, gpointer _)
+static gboolean on_key_press(GritsViewer *viewer, GdkEventKey *event, gpointer _)
 {
-	g_debug("GisViewer: on_key_press - key=%x, state=%x, plus=%x",
+	g_debug("GritsViewer: on_key_press - key=%x, state=%x, plus=%x",
 			event->keyval, event->state, GDK_plus);
 
 	double lat, lon, elev, pan;
-	gis_viewer_get_location(viewer, &lat, &lon, &elev);
+	grits_viewer_get_location(viewer, &lat, &lon, &elev);
 	pan = MIN(elev/(EARTH_R/2), 30);
 	switch (event->keyval) {
-	case GDK_Left:  case GDK_h: gis_viewer_pan(viewer,  0,  -pan, 0); break;
-	case GDK_Down:  case GDK_j: gis_viewer_pan(viewer, -pan, 0,   0); break;
-	case GDK_Up:    case GDK_k: gis_viewer_pan(viewer,  pan, 0,   0); break;
-	case GDK_Right: case GDK_l: gis_viewer_pan(viewer,  0,   pan, 0); break;
-	case GDK_minus: case GDK_o: gis_viewer_zoom(viewer, 10./9); break;
-	case GDK_plus:  case GDK_i: gis_viewer_zoom(viewer, 9./10); break;
-	case GDK_H: gis_viewer_rotate(viewer,  0, 0, -2); break;
-	case GDK_J: gis_viewer_rotate(viewer,  2, 0,  0); break;
-	case GDK_K: gis_viewer_rotate(viewer, -2, 0,  0); break;
-	case GDK_L: gis_viewer_rotate(viewer,  0, 0,  2); break;
+	case GDK_Left:  case GDK_h: grits_viewer_pan(viewer,  0,  -pan, 0); break;
+	case GDK_Down:  case GDK_j: grits_viewer_pan(viewer, -pan, 0,   0); break;
+	case GDK_Up:    case GDK_k: grits_viewer_pan(viewer,  pan, 0,   0); break;
+	case GDK_Right: case GDK_l: grits_viewer_pan(viewer,  0,   pan, 0); break;
+	case GDK_minus: case GDK_o: grits_viewer_zoom(viewer, 10./9); break;
+	case GDK_plus:  case GDK_i: grits_viewer_zoom(viewer, 9./10); break;
+	case GDK_H: grits_viewer_rotate(viewer,  0, 0, -2); break;
+	case GDK_J: grits_viewer_rotate(viewer,  2, 0,  0); break;
+	case GDK_K: grits_viewer_rotate(viewer, -2, 0,  0); break;
+	case GDK_L: grits_viewer_rotate(viewer,  0, 0,  2); break;
 	}
 	return FALSE;
 }
 
-static gboolean on_scroll(GisViewer *viewer, GdkEventScroll *event, gpointer _)
+static gboolean on_scroll(GritsViewer *viewer, GdkEventScroll *event, gpointer _)
 {
 	switch (event->direction) {
-	case GDK_SCROLL_DOWN: gis_viewer_zoom(viewer, 10./9); break;
-	case GDK_SCROLL_UP:   gis_viewer_zoom(viewer, 9./10); break;
+	case GDK_SCROLL_DOWN: grits_viewer_zoom(viewer, 10./9); break;
+	case GDK_SCROLL_UP:   grits_viewer_zoom(viewer, 9./10); break;
 	default: break;
 	}
 	return FALSE;
 }
 
 enum {
-	GIS_DRAG_NONE,
-	GIS_DRAG_PAN,
-	GIS_DRAG_ZOOM,
-	GIS_DRAG_TILT,
+	GRITS_DRAG_NONE,
+	GRITS_DRAG_PAN,
+	GRITS_DRAG_ZOOM,
+	GRITS_DRAG_TILT,
 };
 
-static gboolean on_button_press(GisViewer *viewer, GdkEventButton *event, gpointer _)
+static gboolean on_button_press(GritsViewer *viewer, GdkEventButton *event, gpointer _)
 {
-	g_debug("GisViewer: on_button_press - %d", event->button);
+	g_debug("GritsViewer: on_button_press - %d", event->button);
 	gtk_widget_grab_focus(GTK_WIDGET(viewer));
 	switch (event->button) {
-	case 1:  viewer->drag_mode = GIS_DRAG_PAN;  break;
-	case 2:  viewer->drag_mode = GIS_DRAG_ZOOM; break;
-	case 3:  viewer->drag_mode = GIS_DRAG_TILT; break;
-	default: viewer->drag_mode = GIS_DRAG_NONE; break;
+	case 1:  viewer->drag_mode = GRITS_DRAG_PAN;  break;
+	case 2:  viewer->drag_mode = GRITS_DRAG_ZOOM; break;
+	case 3:  viewer->drag_mode = GRITS_DRAG_TILT; break;
+	default: viewer->drag_mode = GRITS_DRAG_NONE; break;
 	}
 	viewer->drag_x = event->x;
 	viewer->drag_y = event->y;
 	return FALSE;
 }
 
-static gboolean on_button_release(GisViewer *viewer, GdkEventButton *event, gpointer _)
+static gboolean on_button_release(GritsViewer *viewer, GdkEventButton *event, gpointer _)
 {
-	g_debug("GisViewer: on_button_release");
-	viewer->drag_mode = GIS_DRAG_NONE;
+	g_debug("GritsViewer: on_button_release");
+	viewer->drag_mode = GRITS_DRAG_NONE;
 	return FALSE;
 }
 
-static gboolean on_motion_notify(GisViewer *viewer, GdkEventMotion *event, gpointer _)
+static gboolean on_motion_notify(GritsViewer *viewer, GdkEventMotion *event, gpointer _)
 {
 	gdouble x = viewer->drag_x - event->x;
 	gdouble y = viewer->drag_y - event->y;
 	gdouble lat, lon, elev, scale;
-	gis_viewer_get_location(GIS_VIEWER(viewer), &lat, &lon, &elev);
+	grits_viewer_get_location(GRITS_VIEWER(viewer), &lat, &lon, &elev);
 	scale = elev/EARTH_R/15;
 	switch (viewer->drag_mode) {
-	case GIS_DRAG_PAN:  gis_viewer_pan(viewer, -y*scale, x*scale, 0); break;
-	case GIS_DRAG_ZOOM: gis_viewer_zoom(viewer, pow(2, -y/500)); break;
-	case GIS_DRAG_TILT: gis_viewer_rotate(viewer, y/10, 0, x/10); break;
+	case GRITS_DRAG_PAN:  grits_viewer_pan(viewer, -y*scale, x*scale, 0); break;
+	case GRITS_DRAG_ZOOM: grits_viewer_zoom(viewer, pow(2, -y/500)); break;
+	case GRITS_DRAG_TILT: grits_viewer_rotate(viewer, y/10, 0, x/10); break;
 	}
 	viewer->drag_x = event->x;
 	viewer->drag_y = event->y;
 	return FALSE;
 }
 
-static void on_view_changed(GisViewer *viewer,
+static void on_view_changed(GritsViewer *viewer,
 		gdouble _1, gdouble _2, gdouble _3)
 {
 	gtk_widget_queue_draw(GTK_WIDGET(viewer));
 }
 
-static void on_realize(GisViewer *viewer)
+static void on_realize(GritsViewer *viewer)
 {
 	GdkCursor *cursor = gdk_cursor_new(GDK_FLEUR);
 	GdkWindow *window = gtk_widget_get_window(GTK_WIDGET(viewer));
@@ -190,53 +190,53 @@ static void on_realize(GisViewer *viewer)
  * Methods *
  ***********/
 /**
- * gis_viewer_setup:
+ * grits_viewer_setup:
  * @viewer:  the viewer
  * @plugins: a plugins store
  * @prefs:   a prefs store
  *
- * This should be called by objects which implement GisViewer somewhere in their
+ * This should be called by objects which implement GritsViewer somewhere in their
  * constructor.
  */
-void gis_viewer_setup(GisViewer *viewer, GisPlugins *plugins, GisPrefs *prefs)
+void grits_viewer_setup(GritsViewer *viewer, GritsPlugins *plugins, GritsPrefs *prefs)
 {
 	viewer->plugins = plugins;
 	viewer->prefs   = prefs;
-	viewer->offline = gis_prefs_get_boolean(prefs, "gis/offline", NULL);
+	viewer->offline = grits_prefs_get_boolean(prefs, "grits/offline", NULL);
 }
 
 /**
- * gis_viewer_set_time:
+ * grits_viewer_set_time:
  * @viewer: the viewer
  * @time: the time to set the view to
  *
  * Set the current time for the view
  */
-void gis_viewer_set_time(GisViewer *viewer, time_t time)
+void grits_viewer_set_time(GritsViewer *viewer, time_t time)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: set_time - time=%ld", time);
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: set_time - time=%ld", time);
 	viewer->time = time;
-	_gis_viewer_emit_time_changed(viewer);
+	_grits_viewer_emit_time_changed(viewer);
 }
 
 /**
- * gis_viewer_get_time:
+ * grits_viewer_get_time:
  * @viewer: the viewer
  * 
  * Get the time that is being viewed
  *
  * Returns: the current time
  */
-time_t gis_viewer_get_time(GisViewer *viewer)
+time_t grits_viewer_get_time(GritsViewer *viewer)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: get_time");
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: get_time");
 	return viewer->time;
 }
 
 /**
- * gis_viewer_set_location:
+ * grits_viewer_set_location:
  * @viewer: the viewer
  * @lat:  the new latitude
  * @lon:  the new longitude
@@ -244,19 +244,19 @@ time_t gis_viewer_get_time(GisViewer *viewer)
  *
  * Set the location for the camera
  */
-void gis_viewer_set_location(GisViewer *viewer, gdouble lat, gdouble lon, gdouble elev)
+void grits_viewer_set_location(GritsViewer *viewer, gdouble lat, gdouble lon, gdouble elev)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: set_location");
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: set_location");
 	viewer->location[0] = lat;
 	viewer->location[1] = lon;
 	viewer->location[2] = elev;
-	_gis_viewer_fix_location(viewer);
-	_gis_viewer_emit_location_changed(viewer);
+	_grits_viewer_fix_location(viewer);
+	_grits_viewer_emit_location_changed(viewer);
 }
 
 /**
- * gis_viewer_get_location:
+ * grits_viewer_get_location:
  * @viewer: the viewer
  * @lat:  the location to store the latitude
  * @lon:  the location to store the longitude
@@ -264,17 +264,17 @@ void gis_viewer_set_location(GisViewer *viewer, gdouble lat, gdouble lon, gdoubl
  *
  * Get the location of the camera
  */
-void gis_viewer_get_location(GisViewer *viewer, gdouble *lat, gdouble *lon, gdouble *elev)
+void grits_viewer_get_location(GritsViewer *viewer, gdouble *lat, gdouble *lon, gdouble *elev)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	//g_debug("GisViewer: get_location");
+	g_assert(GRITS_IS_VIEWER(viewer));
+	//g_debug("GritsViewer: get_location");
 	*lat  = viewer->location[0];
 	*lon  = viewer->location[1];
 	*elev = viewer->location[2];
 }
 
 /**
- * gis_viewer_pan:
+ * grits_viewer_pan:
  * @viewer: the viewer
  * @forward:  distance to move forward in meters
  * @right:    distance to move right in meters
@@ -285,10 +285,10 @@ void gis_viewer_get_location(GisViewer *viewer, gdouble *lat, gdouble *lon, gdou
  * Bugs: the distances are not in meters
  * Bugs: panning does not move in strait lines
  */
-void gis_viewer_pan(GisViewer *viewer, gdouble forward, gdouble sideways, gdouble up)
+void grits_viewer_pan(GritsViewer *viewer, gdouble forward, gdouble sideways, gdouble up)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: pan - forward=%8.3f, sideways=%8.3f, up=%8.3f",
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: pan - forward=%8.3f, sideways=%8.3f, up=%8.3f",
 			forward, sideways, up);
 	gdouble dist   = sqrt(forward*forward + sideways*sideways);
 	gdouble angle1 = deg2rad(viewer->rotation[2]);
@@ -298,27 +298,27 @@ void gis_viewer_pan(GisViewer *viewer, gdouble forward, gdouble sideways, gdoubl
 	viewer->location[0] += dist*cos(angle);
 	viewer->location[1] += dist*sin(angle);
 	viewer->location[2] += up;
-	_gis_viewer_fix_location(viewer);
-	_gis_viewer_emit_location_changed(viewer);
+	_grits_viewer_fix_location(viewer);
+	_grits_viewer_emit_location_changed(viewer);
 }
 
 /**
- * gis_viewer_zoom:
+ * grits_viewer_zoom:
  * @viewer: the viewer
  * @scale: the scale to multiple the elevation by
  *
  * Multiple the elevation by a scale.
  */
-void gis_viewer_zoom(GisViewer *viewer, gdouble scale)
+void grits_viewer_zoom(GritsViewer *viewer, gdouble scale)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: zoom");
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: zoom");
 	viewer->location[2] *= scale;
-	_gis_viewer_emit_location_changed(viewer);
+	_grits_viewer_emit_location_changed(viewer);
 }
 
 /**
- * gis_viewer_set_rotation:
+ * grits_viewer_set_rotation:
  * @viewer: the viewer
  * @x: rotation new around the x axes
  * @y: rotation new around the y axes
@@ -326,18 +326,18 @@ void gis_viewer_zoom(GisViewer *viewer, gdouble scale)
  *
  * Set the rotations in degrees around the x, y, and z axes.
  */
-void gis_viewer_set_rotation(GisViewer *viewer, gdouble x, gdouble y, gdouble z)
+void grits_viewer_set_rotation(GritsViewer *viewer, gdouble x, gdouble y, gdouble z)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: set_rotation");
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: set_rotation");
 	viewer->rotation[0] = x;
 	viewer->rotation[1] = y;
 	viewer->rotation[2] = z;
-	_gis_viewer_emit_rotation_changed(viewer);
+	_grits_viewer_emit_rotation_changed(viewer);
 }
 
 /**
- * gis_viewer_get_rotation:
+ * grits_viewer_get_rotation:
  * @viewer: the viewer
  * @x: rotation around the x axes
  * @y: rotation around the y axes
@@ -345,17 +345,17 @@ void gis_viewer_set_rotation(GisViewer *viewer, gdouble x, gdouble y, gdouble z)
  *
  * Get the rotations in degrees around the x, y, and z axes.
  */
-void gis_viewer_get_rotation(GisViewer *viewer, gdouble *x, gdouble *y, gdouble *z)
+void grits_viewer_get_rotation(GritsViewer *viewer, gdouble *x, gdouble *y, gdouble *z)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: get_rotation");
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: get_rotation");
 	*x = viewer->rotation[0];
 	*y = viewer->rotation[1];
 	*z = viewer->rotation[2];
 }
 
 /**
- * gis_viewer_rotate:
+ * grits_viewer_rotate:
  * @viewer: the viewer
  * @x: rotation around the x axes
  * @y: rotation around the y axes
@@ -363,58 +363,58 @@ void gis_viewer_get_rotation(GisViewer *viewer, gdouble *x, gdouble *y, gdouble
  *
  * Add to the rotation around the x, y, and z axes.
  */
-void gis_viewer_rotate(GisViewer *viewer, gdouble x, gdouble y, gdouble z)
+void grits_viewer_rotate(GritsViewer *viewer, gdouble x, gdouble y, gdouble z)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: rotate - x=%.0f, y=%.0f, z=%.0f", x, y, z);
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: rotate - x=%.0f, y=%.0f, z=%.0f", x, y, z);
 	viewer->rotation[0] += x;
 	viewer->rotation[1] += y;
 	viewer->rotation[2] += z;
-	_gis_viewer_emit_rotation_changed(viewer);
+	_grits_viewer_emit_rotation_changed(viewer);
 }
 
 /**
- * gis_viewer_refresh:
+ * grits_viewer_refresh:
  * @viewer: the viewer
  *
  * Trigger the refresh signal. This will cause any remote data to be checked for
  * updates. 
  */
-void gis_viewer_refresh(GisViewer *viewer)
+void grits_viewer_refresh(GritsViewer *viewer)
 {
-	g_debug("GisViewer: refresh");
-	_gis_viewer_emit_refresh(viewer);
+	g_debug("GritsViewer: refresh");
+	_grits_viewer_emit_refresh(viewer);
 }
 
 /**
- * gis_viewer_set_offline:
+ * grits_viewer_set_offline:
  * @viewer: the viewer
  * @offline: %TRUE to enter offline mode
  *
  * Set the offline mode. If @offline is %TRUE, only locally cached data will be
  * used.
  */
-void gis_viewer_set_offline(GisViewer *viewer, gboolean offline)
+void grits_viewer_set_offline(GritsViewer *viewer, gboolean offline)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: set_offline - %d", offline);
-	gis_prefs_set_boolean(viewer->prefs, "gis/offline", offline);
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: set_offline - %d", offline);
+	grits_prefs_set_boolean(viewer->prefs, "grits/offline", offline);
 	viewer->offline = offline;
-	_gis_viewer_emit_offline(viewer);
+	_grits_viewer_emit_offline(viewer);
 }
 
 /**
- * gis_viewer_get_offline:
+ * grits_viewer_get_offline:
  * @viewer: the viewer
  *
  * Check if the viewer is in offline mode.
  *
  * Returns: %TRUE if the viewer is in offline mode.
  */
-gboolean gis_viewer_get_offline(GisViewer *viewer)
+gboolean grits_viewer_get_offline(GritsViewer *viewer)
 {
-	g_assert(GIS_IS_VIEWER(viewer));
-	g_debug("GisViewer: get_offline - %d", viewer->offline);
+	g_assert(GRITS_IS_VIEWER(viewer));
+	g_debug("GritsViewer: get_offline - %d", viewer->offline);
 	return viewer->offline;
 }
 
@@ -422,7 +422,7 @@ gboolean gis_viewer_get_offline(GisViewer *viewer)
  * To be implemented by subclasses *
  ***********************************/
 /**
- * gis_viewer_center_position:
+ * grits_viewer_center_position:
  * @viewer: the viewer
  * @lat:  the latitude
  * @lon:  the longitude
@@ -431,17 +431,17 @@ gboolean gis_viewer_get_offline(GisViewer *viewer)
  * Center the viewer on a point. This can be used before drawing operations to
  * center the items a particular location.
  */
-void gis_viewer_center_position(GisViewer *viewer,
+void grits_viewer_center_position(GritsViewer *viewer,
 		gdouble lat, gdouble lon, gdouble elev)
 {
-	GisViewerClass *klass = GIS_VIEWER_GET_CLASS(viewer);
+	GritsViewerClass *klass = GRITS_VIEWER_GET_CLASS(viewer);
 	if (!klass->center_position)
-		g_warning("GisViewer: center_position - Unimplemented");
+		g_warning("GritsViewer: center_position - Unimplemented");
 	klass->center_position(viewer, lat, lon, elev);
 }
 
 /**
- * gis_viewer_project:
+ * grits_viewer_project:
  * @viewer: the viewer
  * @lat:  the latitude
  * @lon:  the latitude
@@ -452,35 +452,35 @@ void gis_viewer_center_position(GisViewer *viewer,
  *
  * Project a latitude, longitude, elevation point to to x, y, and z coordinates
  * in screen space. Useful for drawing orthographic data over a particular point
- * in space. E.g. #GisMarker.
+ * in space. E.g. #GritsMarker.
  */
-void gis_viewer_project(GisViewer *viewer,
+void grits_viewer_project(GritsViewer *viewer,
 		gdouble lat, gdouble lon, gdouble elev,
 		gdouble *px, gdouble *py, gdouble *pz)
 {
-	GisViewerClass *klass = GIS_VIEWER_GET_CLASS(viewer);
+	GritsViewerClass *klass = GRITS_VIEWER_GET_CLASS(viewer);
 	if (!klass->project)
-		g_warning("GisViewer: project - Unimplemented");
+		g_warning("GritsViewer: project - Unimplemented");
 	klass->project(viewer, lat, lon, elev, px, py, pz);
 }
 
 /**
- * gis_viewer_clear_height_func:
+ * grits_viewer_clear_height_func:
  * @viewer: the viewer
  *
  * Clears the height function for the entire viewer. Useful when an elevation
  * plugin is unloaded.
  */
-void gis_viewer_clear_height_func(GisViewer *viewer)
+void grits_viewer_clear_height_func(GritsViewer *viewer)
 {
-	GisViewerClass *klass = GIS_VIEWER_GET_CLASS(viewer);
+	GritsViewerClass *klass = GRITS_VIEWER_GET_CLASS(viewer);
 	if (!klass->clear_height_func)
-		g_warning("GisViewer: clear_height_func - Unimplemented");
+		g_warning("GritsViewer: clear_height_func - Unimplemented");
 	klass->clear_height_func(viewer);
 }
 
 /**
- * gis_viewer_set_height_func:
+ * grits_viewer_set_height_func:
  * @viewer:      the viewer
  * @bounds:      the area to set the height function for
  * @height_func: the height function 
@@ -489,18 +489,18 @@ void gis_viewer_clear_height_func(GisViewer *viewer)
  *
  * Set the height function to be used for a given part of the surface..
  */
-void gis_viewer_set_height_func(GisViewer *viewer, GisBounds *bounds,
-		GisHeightFunc height_func, gpointer user_data,
+void grits_viewer_set_height_func(GritsViewer *viewer, GritsBounds *bounds,
+		GritsHeightFunc height_func, gpointer user_data,
 		gboolean update)
 {
-	GisViewerClass *klass = GIS_VIEWER_GET_CLASS(viewer);
+	GritsViewerClass *klass = GRITS_VIEWER_GET_CLASS(viewer);
 	if (!klass->set_height_func)
-		g_warning("GisViewer: set_height_func - Unimplemented");
+		g_warning("GritsViewer: set_height_func - Unimplemented");
 	klass->set_height_func(viewer, bounds, height_func, user_data, update);
 }
 
 /**
- * gis_viewer_add:
+ * grits_viewer_add:
  * @viewer: the viewer
  * @object: the object to add
  * @level:  the level to add the object to
@@ -518,42 +518,42 @@ void gis_viewer_set_height_func(GisViewer *viewer, GisBounds *bounds,
  * The viewer steals the objects reference. Call g_object_ref if you plan on
  * holding a reference as well.
  *
- * Returns: a handle to be pass to gis_viewer_remove()
+ * Returns: a handle to be pass to grits_viewer_remove()
  */
-gpointer gis_viewer_add(GisViewer *viewer, GisObject *object,
+gpointer grits_viewer_add(GritsViewer *viewer, GritsObject *object,
 		gint level, gboolean sort)
 {
-	GisViewerClass *klass = GIS_VIEWER_GET_CLASS(viewer);
+	GritsViewerClass *klass = GRITS_VIEWER_GET_CLASS(viewer);
 	if (!klass->add)
-		g_warning("GisViewer: add - Unimplemented");
+		g_warning("GritsViewer: add - Unimplemented");
 	return klass->add(viewer, object, level, sort);
 }
 
 /**
- * gis_viewer_remove:
+ * grits_viewer_remove:
  * @viewer: the viewer
- * @ref:    the handle obtained from gis_viewer_add()
+ * @ref:    the handle obtained from grits_viewer_add()
  *
  * Remove an object from the viewer. The objects reference count is decremented
  * prior to being removed.
  *
- * Returns: the #GisObject referenced by the handle
+ * Returns: the #GritsObject referenced by the handle
  */
-GisObject *gis_viewer_remove(GisViewer *viewer, gpointer ref)
+GritsObject *grits_viewer_remove(GritsViewer *viewer, gpointer ref)
 {
-	GisViewerClass *klass = GIS_VIEWER_GET_CLASS(viewer);
+	GritsViewerClass *klass = GRITS_VIEWER_GET_CLASS(viewer);
 	if (!klass->remove)
-		g_warning("GisViewer: remove - Unimplemented");
+		g_warning("GritsViewer: remove - Unimplemented");
 	return klass->remove(viewer, ref);
 }
 
 /****************
  * GObject code *
  ****************/
-G_DEFINE_ABSTRACT_TYPE(GisViewer, gis_viewer, GTK_TYPE_DRAWING_AREA);
-static void gis_viewer_init(GisViewer *viewer)
+G_DEFINE_ABSTRACT_TYPE(GritsViewer, grits_viewer, GTK_TYPE_DRAWING_AREA);
+static void grits_viewer_init(GritsViewer *viewer)
 {
-	g_debug("GisViewer: init");
+	g_debug("GritsViewer: init");
 	/* Default values */
 	viewer->time        = time(NULL);
 	viewer->location[0] = 40;
@@ -582,19 +582,19 @@ static void gis_viewer_init(GisViewer *viewer)
 
 	g_signal_connect(viewer, "realize",              G_CALLBACK(on_realize),        NULL);
 }
-static void gis_viewer_finalize(GObject *gobject)
+static void grits_viewer_finalize(GObject *gobject)
 {
-	g_debug("GisViewer: finalize");
-	G_OBJECT_CLASS(gis_viewer_parent_class)->finalize(gobject);
+	g_debug("GritsViewer: finalize");
+	G_OBJECT_CLASS(grits_viewer_parent_class)->finalize(gobject);
 }
-static void gis_viewer_class_init(GisViewerClass *klass)
+static void grits_viewer_class_init(GritsViewerClass *klass)
 {
-	g_debug("GisViewer: class_init");
+	g_debug("GritsViewer: class_init");
 	GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
-	gobject_class->finalize     = gis_viewer_finalize;
+	gobject_class->finalize     = grits_viewer_finalize;
 
 	/**
-	 * GisViewer::time-changed:
+	 * GritsViewer::time-changed:
 	 * @viewer: the viewer.
 	 * @time:   the new time.
 	 *
@@ -614,7 +614,7 @@ static void gis_viewer_class_init(GisViewerClass *klass)
 			G_TYPE_LONG);
 
 	/**
-	 * GisViewer::location-changed:
+	 * GritsViewer::location-changed:
 	 * @viewer: the viewer.
 	 * @lat:    the new latitude.
 	 * @lon:    the new longitude.
@@ -638,7 +638,7 @@ static void gis_viewer_class_init(GisViewerClass *klass)
 			G_TYPE_DOUBLE);
 
 	/**
-	 * GisViewer::rotation-changed:
+	 * GritsViewer::rotation-changed:
 	 * @viewer: the viewer.
 	 * @x: rotation new around the x axes.
 	 * @y: rotation new around the y axes.
@@ -662,7 +662,7 @@ static void gis_viewer_class_init(GisViewerClass *klass)
 			G_TYPE_DOUBLE);
 
 	/**
-	 * GisViewer::refresh:
+	 * GritsViewer::refresh:
 	 * @viewer: the viewer.
 	 *
 	 * The ::refresh signal is emitted when a refresh is needed. If you are
@@ -681,7 +681,7 @@ static void gis_viewer_class_init(GisViewerClass *klass)
 			0);
 
 	/**
-	 * GisViewer::offline:
+	 * GritsViewer::offline:
 	 * @viewer:  the viewer.
 	 * @offline: %TRUE if the viewer going offline.
 	 *
diff --git a/src/grits-viewer.h b/src/grits-viewer.h
index 8e50b81..aff426b 100644
--- a/src/grits-viewer.h
+++ b/src/grits-viewer.h
@@ -16,76 +16,75 @@
  */
 
 /**
- * Hack alert: gis-opengl.h needs to be included before gis-viewer
- *   - GisViewer depends on GisObject for add/remove functions
- *   - GisObject depends on GisOpenGL for load/unload functions
- *   - GisOpenGL depends on GisViewer for inheritance
+ * Hack alert: grits-opengl.h needs to be included before grits-viewer
+ *   - GritsViewer depends on GritsObject for add/remove functions
+ *   - GritsObject depends on GritsOpenGL for load/unload functions
+ *   - GritsOpenGL depends on GritsViewer for inheritance
  *
- * The problem here is that GisOpenGL needs the GisViewer definition
- * but GisViewer only needs the typedefs (through GisObject),
- * so GisViewer needs to be included after the GisOpenGL typedefs but
- * before the GisOpenGL definition. This is handled internally by
- * gis-opengl.h
+ * The problem here is that GritsOpenGL needs the GritsViewer definition but
+ * GritsViewer only needs the typedefs (through GritsObject), so GritsViewer
+ * needs to be included after the GritsOpenGL typedefs but before the
+ * GritsOpenGL definition. This is handled internally by grits-opengl.h
  *
- * This should probably be fixed, but making a GisGLObject interface
- * seems like too much work. Merging GisViewer and GisOpenGL would also work,
- * but I like the separate that that's provided by having two.
+ * This should probably be fixed, but making a GritsGLObject interface seems
+ * like too much work. Merging GritsViewer and GritsOpenGL would also work, but
+ * I like the separate that that's provided by having two.
  */
 #include "grits-opengl.h"
 
-#ifndef __GIS_VIEWER_H__
-#define __GIS_VIEWER_H__
+#ifndef __GRITS_VIEWER_H__
+#define __GRITS_VIEWER_H__
 
 #include <gtk/gtk.h>
 #include <glib-object.h>
 
 /* Rendering levels */
 /**
- * GIS_LEVEL_BACKGROUND: 
+ * GRITS_LEVEL_BACKGROUND: 
  *
  * The level used to draw background objects (stars, atmosphere, etc).
  */
-#define GIS_LEVEL_BACKGROUND -100
+#define GRITS_LEVEL_BACKGROUND -100
 
 /**
- * GIS_LEVEL_WORLD: 
+ * GRITS_LEVEL_WORLD: 
  *
  * The level used to draw world objects. This is for both surface data as well
  * as things in the air or underground. Most objects should use
- * %GIS_LEVEL_WORLD;
+ * %GRITS_LEVEL_WORLD;
  */
-#define GIS_LEVEL_WORLD         0
+#define GRITS_LEVEL_WORLD         0
 
 /**
- * GIS_LEVEL_OVERLAY: 
+ * GRITS_LEVEL_OVERLAY: 
  *
  * The level used to draw screen overlays. These will be drawn in front of most
- * of ther objects. Text and markers should use %GIS_LEVEL_OVERLAY.
+ * of ther objects. Text and markers should use %GRITS_LEVEL_OVERLAY.
  */
-#define GIS_LEVEL_OVERLAY     100
+#define GRITS_LEVEL_OVERLAY     100
 
 /**
- * GIS_LEVEL_HUD: 
+ * GRITS_LEVEL_HUD: 
  *
  * The level used to draw the Heads Up Display. This is for things that are not
  * anchored at all the the world. They should be drawn in front of everything
  * else.
  */
-#define GIS_LEVEL_HUD         200
+#define GRITS_LEVEL_HUD         200
 
 /* Type macros */
-#define GIS_TYPE_VIEWER            (gis_viewer_get_type())
-#define GIS_VIEWER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_VIEWER, GisViewer))
-#define GIS_IS_VIEWER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_VIEWER))
-#define GIS_VIEWER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_VIEWER, GisViewerClass))
-#define GIS_IS_VIEWER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_VIEWER))
-#define GIS_VIEWER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_VIEWER, GisViewerClass))
+#define GRITS_TYPE_VIEWER            (grits_viewer_get_type())
+#define GRITS_VIEWER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_VIEWER, GritsViewer))
+#define GRITS_IS_VIEWER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_VIEWER))
+#define GRITS_VIEWER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_VIEWER, GritsViewerClass))
+#define GRITS_IS_VIEWER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_VIEWER))
+#define GRITS_VIEWER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_VIEWER, GritsViewerClass))
 
-typedef struct _GisViewer      GisViewer;
-typedef struct _GisViewerClass GisViewerClass;
+typedef struct _GritsViewer      GritsViewer;
+typedef struct _GritsViewerClass GritsViewerClass;
 
 /**
- * GisHeightFunc:
+ * GritsHeightFunc:
  * @lat:       the target latitude
  * @lon:       the target longitude
  * @user_data: user data passed to the function
@@ -94,18 +93,18 @@ typedef struct _GisViewerClass GisViewerClass;
  *
  * Returns: the elevation in meters above sea level
  */
-typedef gdouble (*GisHeightFunc)(gdouble lat, gdouble lon, gpointer user_data);
+typedef gdouble (*GritsHeightFunc)(gdouble lat, gdouble lon, gpointer user_data);
 
 #include "grits-plugin.h"
 #include "grits-prefs.h"
 #include "objects/grits-object.h"
 
-struct _GisViewer {
+struct _GritsViewer {
 	GtkDrawingArea parent_instance;
 
 	/* instance members */
-	GisPlugins *plugins;
-	GisPrefs   *prefs;
+	GritsPlugins *plugins;
+	GritsPrefs   *prefs;
 	time_t      time;
 	gdouble     location[3];
 	gdouble     rotation[3];
@@ -116,64 +115,64 @@ struct _GisViewer {
 	gdouble drag_x, drag_y;
 };
 
-struct _GisViewerClass {
+struct _GritsViewerClass {
 	GtkDrawingAreaClass parent_class;
 
 	/* class members */
-	void (*center_position)  (GisViewer *viewer,
+	void (*center_position)  (GritsViewer *viewer,
 	                          gdouble lat, gdouble lon, gdouble elev);
 
-	void (*project)          (GisViewer *viewer,
+	void (*project)          (GritsViewer *viewer,
 	                          gdouble lat, gdouble lon, gdouble elev,
 	                          gdouble *px, gdouble *py, gdouble *pz);
 
-	void (*clear_height_func)(GisViewer *viewer);
-	void (*set_height_func)  (GisViewer *viewer, GisBounds *bounds,
-	                          GisHeightFunc height_func, gpointer user_data,
+	void (*clear_height_func)(GritsViewer *viewer);
+	void (*set_height_func)  (GritsViewer *viewer, GritsBounds *bounds,
+	                          GritsHeightFunc height_func, gpointer user_data,
 	                          gboolean update);
 
-	gpointer (*add)          (GisViewer *viewer, GisObject *object,
+	gpointer (*add)          (GritsViewer *viewer, GritsObject *object,
 	                          gint level, gboolean sort);
-	GisObject *(*remove)     (GisViewer *viewer, gpointer ref);
+	GritsObject *(*remove)     (GritsViewer *viewer, gpointer ref);
 };
 
-GType gis_viewer_get_type(void);
+GType grits_viewer_get_type(void);
 
 /* Methods */
-void gis_viewer_setup(GisViewer *viewer, GisPlugins *plugins, GisPrefs *prefs);
+void grits_viewer_setup(GritsViewer *viewer, GritsPlugins *plugins, GritsPrefs *prefs);
 
-void gis_viewer_set_time(GisViewer *viewer, time_t time);
-time_t gis_viewer_get_time(GisViewer *viewer);
+void grits_viewer_set_time(GritsViewer *viewer, time_t time);
+time_t grits_viewer_get_time(GritsViewer *viewer);
 
-void gis_viewer_set_location(GisViewer *viewer, gdouble  lat, gdouble  lon, gdouble  elev);
-void gis_viewer_get_location(GisViewer *viewer, gdouble *lat, gdouble *lon, gdouble *elev);
-void gis_viewer_pan(GisViewer *viewer, gdouble forward, gdouble right, gdouble up);
-void gis_viewer_zoom(GisViewer *viewer, gdouble  scale);
+void grits_viewer_set_location(GritsViewer *viewer, gdouble  lat, gdouble  lon, gdouble  elev);
+void grits_viewer_get_location(GritsViewer *viewer, gdouble *lat, gdouble *lon, gdouble *elev);
+void grits_viewer_pan(GritsViewer *viewer, gdouble forward, gdouble right, gdouble up);
+void grits_viewer_zoom(GritsViewer *viewer, gdouble  scale);
 
-void gis_viewer_set_rotation(GisViewer *viewer, gdouble  x, gdouble  y, gdouble  z);
-void gis_viewer_get_rotation(GisViewer *viewer, gdouble *x, gdouble *y, gdouble *z);
-void gis_viewer_rotate      (GisViewer *viewer, gdouble  x, gdouble  y, gdouble  z);
+void grits_viewer_set_rotation(GritsViewer *viewer, gdouble  x, gdouble  y, gdouble  z);
+void grits_viewer_get_rotation(GritsViewer *viewer, gdouble *x, gdouble *y, gdouble *z);
+void grits_viewer_rotate      (GritsViewer *viewer, gdouble  x, gdouble  y, gdouble  z);
 
-void gis_viewer_refresh(GisViewer *viewer);
+void grits_viewer_refresh(GritsViewer *viewer);
 
-void gis_viewer_set_offline(GisViewer *viewer, gboolean offline);
-gboolean gis_viewer_get_offline(GisViewer *viewer);
+void grits_viewer_set_offline(GritsViewer *viewer, gboolean offline);
+gboolean grits_viewer_get_offline(GritsViewer *viewer);
 
 /* To be implemented by subclasses */
-void gis_viewer_center_position(GisViewer *viewer,
+void grits_viewer_center_position(GritsViewer *viewer,
 		gdouble lat, gdouble lon, gdouble elev);
 
-void gis_viewer_project(GisViewer *viewer,
+void grits_viewer_project(GritsViewer *viewer,
 		gdouble lat, gdouble lon, gdouble elev,
 		gdouble *px, gdouble *py, gdouble *pz);
 
-void gis_viewer_clear_height_func(GisViewer *viewer);
-void gis_viewer_set_height_func(GisViewer *viewer, GisBounds *bounds,
-		GisHeightFunc height_func, gpointer user_data,
+void grits_viewer_clear_height_func(GritsViewer *viewer);
+void grits_viewer_set_height_func(GritsViewer *viewer, GritsBounds *bounds,
+		GritsHeightFunc height_func, gpointer user_data,
 		gboolean update);
 
-gpointer gis_viewer_add(GisViewer *viewer, GisObject *object,
+gpointer grits_viewer_add(GritsViewer *viewer, GritsObject *object,
 		gint level, gboolean sort);
-GisObject *gis_viewer_remove(GisViewer *viewer, gpointer ref);
+GritsObject *grits_viewer_remove(GritsViewer *viewer, gpointer ref);
 
 #endif
diff --git a/src/grits.h b/src/grits.h
index 024ab0c..94cc1ab 100644
--- a/src/grits.h
+++ b/src/grits.h
@@ -15,8 +15,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_H__
-#define __GIS_H__
+#ifndef __GRITS_H__
+#define __GRITS_H__
 
 /* Grits Core */
 #include <grits-viewer.h>
diff --git a/src/objects/grits-callback.c b/src/objects/grits-callback.c
index 512c3d3..8bc97c4 100644
--- a/src/objects/grits-callback.c
+++ b/src/objects/grits-callback.c
@@ -16,14 +16,14 @@
  */
 
 /**
- * SECTION:gis-callback
+ * SECTION:grits-callback
  * @short_description: Custom callback objects
  *
- * #GisCallback objects are used for custom drawing functions. A common example
+ * #GritsCallback objects are used for custom drawing functions. A common example
  * of this would be to render something which does not easily fit into a normal
  * object. For instance, a Heads-Up-Display overlay.
  *
- * Callbacks are an alternate to extending GisObject with a new class and
+ * Callbacks are an alternate to extending GritsObject with a new class and
  * should be used when only once instance of the object will be needed.
  */
 
@@ -31,38 +31,38 @@
 #include "grits-callback.h"
 
 /**
- * gis_callback_new:
+ * grits_callback_new:
  * @callback:  the function to call to draw the object
  * @user_data: user data to pass to the drawing function
  *
- * Create a #GisCallback object with an associated function and user data.
+ * Create a #GritsCallback object with an associated function and user data.
  *
- * Returns: the new #GisCallback
+ * Returns: the new #GritsCallback
  */
-GisCallback *gis_callback_new(GisCallbackFunc draw_cb, gpointer user_data)
+GritsCallback *grits_callback_new(GritsCallbackFunc draw_cb, gpointer user_data)
 {
-	GisCallback *cb = g_object_new(GIS_TYPE_CALLBACK, NULL);
+	GritsCallback *cb = g_object_new(GRITS_TYPE_CALLBACK, NULL);
 	cb->draw      = draw_cb;
 	cb->user_data = user_data;
 	return cb;
 }
 
 /* Proxy class methods to per-object methods */
-static void proxy_draw(GisObject *_cb, GisOpenGL *opengl)
+static void proxy_draw(GritsObject *_cb, GritsOpenGL *opengl)
 {
-	GisCallback *cb = GIS_CALLBACK(_cb);
+	GritsCallback *cb = GRITS_CALLBACK(_cb);
 	if (cb->draw)
 		cb->draw(cb, opengl, cb->user_data);
 }
 
-/* GisCallback */
-G_DEFINE_TYPE(GisCallback, gis_callback, GIS_TYPE_OBJECT);
-static void gis_callback_init(GisCallback *cb)
+/* GritsCallback */
+G_DEFINE_TYPE(GritsCallback, grits_callback, GRITS_TYPE_OBJECT);
+static void grits_callback_init(GritsCallback *cb)
 {
 }
 
-static void gis_callback_class_init(GisCallbackClass *klass)
+static void grits_callback_class_init(GritsCallbackClass *klass)
 {
-	GisObjectClass *object_class = GIS_OBJECT_CLASS(klass);
+	GritsObjectClass *object_class = GRITS_OBJECT_CLASS(klass);
 	object_class->draw = proxy_draw;
 }
diff --git a/src/objects/grits-callback.h b/src/objects/grits-callback.h
index b4a3619..5bee549 100644
--- a/src/objects/grits-callback.h
+++ b/src/objects/grits-callback.h
@@ -15,45 +15,45 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_CALLBACK_H__
-#define __GIS_CALLBACK_H__
+#ifndef __GRITS_CALLBACK_H__
+#define __GRITS_CALLBACK_H__
 
 #include <glib.h>
 #include <glib-object.h>
 #include "grits-object.h"
 
-/* GisCallback */
-#define GIS_TYPE_CALLBACK            (gis_callback_get_type())
-#define GIS_CALLBACK(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_CALLBACK, GisCallback))
-#define GIS_IS_CALLBACK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_CALLBACK))
-#define GIS_CALLBACK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_CALLBACK, GisCallbackClass))
-#define GIS_IS_CALLBACK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_CALLBACK))
-#define GIS_CALLBACK_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_CALLBACK, GisCallbackClass))
+/* GritsCallback */
+#define GRITS_TYPE_CALLBACK            (grits_callback_get_type())
+#define GRITS_CALLBACK(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_CALLBACK, GritsCallback))
+#define GRITS_IS_CALLBACK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_CALLBACK))
+#define GRITS_CALLBACK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_CALLBACK, GritsCallbackClass))
+#define GRITS_IS_CALLBACK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_CALLBACK))
+#define GRITS_CALLBACK_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_CALLBACK, GritsCallbackClass))
 
-typedef struct _GisCallback      GisCallback;
-typedef struct _GisCallbackClass GisCallbackClass;
+typedef struct _GritsCallback      GritsCallback;
+typedef struct _GritsCallbackClass GritsCallbackClass;
 
 /**
- * GisCallbackFunc:
+ * GritsCallbackFunc:
  * @callback:  the callback object to be drawn
  * @user_data: the user data associated with the callback 
  *
  * A function to be called when the callback object is being rendered
  */
-typedef void (*GisCallbackFunc)(GisCallback *callback, GisOpenGL *opengl, gpointer user_data);
+typedef void (*GritsCallbackFunc)(GritsCallback *callback, GritsOpenGL *opengl, gpointer user_data);
 
-struct _GisCallback {
-	GisObject       parent;
-	GisCallbackFunc draw;
-	gpointer        user_data;
+struct _GritsCallback {
+	GritsObject       parent;
+	GritsCallbackFunc draw;
+	gpointer          user_data;
 };
 
-struct _GisCallbackClass {
-	GisObjectClass parent_class;
+struct _GritsCallbackClass {
+	GritsObjectClass parent_class;
 };
 
-GType gis_callback_get_type(void);
+GType grits_callback_get_type(void);
 
-GisCallback *gis_callback_new(GisCallbackFunc draw_cb, gpointer user_data);
+GritsCallback *grits_callback_new(GritsCallbackFunc draw_cb, gpointer user_data);
 
 #endif
diff --git a/src/objects/grits-marker.c b/src/objects/grits-marker.c
index ff6ccb2..497c77c 100644
--- a/src/objects/grits-marker.c
+++ b/src/objects/grits-marker.c
@@ -16,17 +16,17 @@
  */
 
 /**
- * SECTION:gis-marker
+ * SECTION:grits-marker
  * @short_description: Single point markers
  *
- * Each #GisMarker represents some point on the earth with some form of
+ * Each #GritsMarker represents some point on the earth with some form of
  * content. Commonly this is used to mark geographic features such as cities or
  * states.
  * 
  * While markers represent a place in three dimensions somewhere on, below, or
  * above the surface of the earth, they are drawn in 2 dimensions so that they
- * look normal and readable by the user. Due to this, GisObjects should almost
- * always be added to the GIS_LEVEL_OVERLAY level so they are drawn "above" the
+ * look normal and readable by the user. Due to this, GritsObjects should almost
+ * always be added to the GRITS_LEVEL_OVERLAY level so they are drawn "above" the
  * actual earth.
  */
 
@@ -35,22 +35,22 @@
 #include "grits-marker.h"
 
 /**
- * gis_marker_new:
+ * grits_marker_new:
  * @label: a short description of the marker
  *
- * Create a new GisMarker which shows the given label when drawn.
+ * Create a new GritsMarker which shows the given label when drawn.
  *
- * Returns: the new #GisMarker.
+ * Returns: the new #GritsMarker.
  */
-GisMarker *gis_marker_new(const gchar *label)
+GritsMarker *grits_marker_new(const gchar *label)
 {
-	//g_debug("GisMarker: new - %s", label);
+	//g_debug("GritsMarker: new - %s", label);
 	static const gdouble OUTLINE =   2;
 	static const gdouble RADIUS  =   3;
 	static const gdouble WIDTH   = 128;
 	static const gdouble HEIGHT  =  32;
 
-	GisMarker *marker = g_object_new(GIS_TYPE_MARKER, NULL);
+	GritsMarker *marker = g_object_new(GRITS_TYPE_MARKER, NULL);
 	marker->xoff  = RADIUS+OUTLINE;
 	marker->yoff  = HEIGHT-(RADIUS+OUTLINE);
 	marker->label = g_strdup(label);
@@ -96,12 +96,12 @@ GisMarker *gis_marker_new(const gchar *label)
 }
 
 /* Drawing */
-static void gis_marker_draw(GisObject *_marker, GisOpenGL *opengl)
+static void grits_marker_draw(GritsObject *_marker, GritsOpenGL *opengl)
 {
-	GisMarker *marker = GIS_MARKER(_marker);
-	GisPoint *point = gis_object_center(marker);
+	GritsMarker *marker = GRITS_MARKER(_marker);
+	GritsPoint  *point  = grits_object_center(marker);
 	gdouble px, py, pz;
-	gis_viewer_project(GIS_VIEWER(opengl),
+	grits_viewer_project(GRITS_VIEWER(opengl),
 			point->lat, point->lon, point->elev,
 			&px, &py, &pz);
 
@@ -111,7 +111,7 @@ static void gis_marker_draw(GisObject *_marker, GisOpenGL *opengl)
 	if (pz > 1)
 		return;
 
-	//g_debug("GisOpenGL: draw_marker - %s pz=%f ", marker->label, pz);
+	//g_debug("GritsOpenGL: draw_marker - %s pz=%f ", marker->label, pz);
 
 	cairo_surface_t *surface = cairo_get_target(marker->cairo);
 	gdouble width  = cairo_image_surface_get_width(surface);
@@ -138,15 +138,15 @@ static void gis_marker_draw(GisObject *_marker, GisOpenGL *opengl)
 }
 
 /* GObject code */
-G_DEFINE_TYPE(GisMarker, gis_marker, GIS_TYPE_OBJECT);
-static void gis_marker_init(GisMarker *marker)
+G_DEFINE_TYPE(GritsMarker, grits_marker, GRITS_TYPE_OBJECT);
+static void grits_marker_init(GritsMarker *marker)
 {
 }
 
-static void gis_marker_finalize(GObject *_marker)
+static void grits_marker_finalize(GObject *_marker)
 {
-	//g_debug("GisMarker: finalize - %s", marker->label);
-	GisMarker *marker = GIS_MARKER(_marker);
+	//g_debug("GritsMarker: finalize - %s", marker->label);
+	GritsMarker *marker = GRITS_MARKER(_marker);
 	glDeleteTextures(1, &marker->tex);
 	cairo_surface_t *surface = cairo_get_target(marker->cairo);
 	cairo_surface_destroy(surface);
@@ -154,12 +154,12 @@ static void gis_marker_finalize(GObject *_marker)
 	g_free(marker->label);
 }
 
-static void gis_marker_class_init(GisMarkerClass *klass)
+static void grits_marker_class_init(GritsMarkerClass *klass)
 {
-	g_debug("GisMarker: class_init");
+	g_debug("GritsMarker: class_init");
 	GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
-	gobject_class->finalize = gis_marker_finalize;
+	gobject_class->finalize = grits_marker_finalize;
 
-	GisObjectClass *object_class = GIS_OBJECT_CLASS(klass);
-	object_class->draw = gis_marker_draw;
+	GritsObjectClass *object_class = GRITS_OBJECT_CLASS(klass);
+	object_class->draw = grits_marker_draw;
 }
diff --git a/src/objects/grits-marker.h b/src/objects/grits-marker.h
index 50dca05..5fdedc7 100644
--- a/src/objects/grits-marker.h
+++ b/src/objects/grits-marker.h
@@ -15,39 +15,39 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_MARKER_H__
-#define __GIS_MARKER_H__
+#ifndef __GRITS_MARKER_H__
+#define __GRITS_MARKER_H__
 
 #include <glib.h>
 #include <glib-object.h>
 #include <cairo.h>
 #include "grits-object.h"
 
-/* GisMarker */
-#define GIS_TYPE_MARKER            (gis_marker_get_type())
-#define GIS_MARKER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_MARKER, GisMarker))
-#define GIS_IS_MARKER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_MARKER))
-#define GIS_MARKER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_MARKER, GisMarkerClass))
-#define GIS_IS_MARKER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_MARKER))
-#define GIS_MARKER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_MARKER, GisMarkerClass))
+/* GritsMarker */
+#define GRITS_TYPE_MARKER            (grits_marker_get_type())
+#define GRITS_MARKER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_MARKER, GritsMarker))
+#define GRITS_IS_MARKER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_MARKER))
+#define GRITS_MARKER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_MARKER, GritsMarkerClass))
+#define GRITS_IS_MARKER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_MARKER))
+#define GRITS_MARKER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_MARKER, GritsMarkerClass))
 
-typedef struct _GisMarker      GisMarker;
-typedef struct _GisMarkerClass GisMarkerClass;
+typedef struct _GritsMarker      GritsMarker;
+typedef struct _GritsMarkerClass GritsMarkerClass;
 
-struct _GisMarker {
-	GisObject  parent_instance;
+struct _GritsMarker {
+	GritsObject  parent_instance;
 	gint       xoff, yoff;
 	gchar     *label;
 	cairo_t   *cairo;
 	guint      tex;
 };
 
-struct _GisMarkerClass {
-	GisObjectClass parent_class;
+struct _GritsMarkerClass {
+	GritsObjectClass parent_class;
 };
 
-GType gis_marker_get_type(void);
+GType grits_marker_get_type(void);
 
-GisMarker *gis_marker_new(const gchar *label);
+GritsMarker *grits_marker_new(const gchar *label);
 
 #endif
diff --git a/src/objects/grits-object.c b/src/objects/grits-object.c
index f625e7a..455723d 100644
--- a/src/objects/grits-object.c
+++ b/src/objects/grits-object.c
@@ -16,7 +16,7 @@
  */
 
 /**
- * SECTION:gis-object
+ * SECTION:grits-object
  * @short_description: Base class for drawing operations
  *
  * Objects in grits are things which can be added to the viewer and will be
@@ -24,8 +24,8 @@
  * level of detail which are used by the viewer to determine which objects
  * should be drawn.
  *
- * Each #GisObject is also a #GObject, but not every GObject in grits is a
- * GisObject. The "Object" part of the name is just coincidence.
+ * Each #GritsObject is also a #GObject, but not every GObject in grits is a
+ * GritsObject. The "Object" part of the name is just coincidence.
  */
 
 #include <config.h>
@@ -35,11 +35,8 @@
 #include "grits-object.h"
 
 
-/*************
- * GisObject *
- *************/
 /**
- * gis_object_draw:
+ * grits_object_draw:
  * @object: the object
  * @opengl: the viewer the object is being displayed in
  *
@@ -48,11 +45,11 @@
  * The GL_PROJECTION and GL_MODELVIEW matricies and GL_ALL_ATTRIB_BITS will be
  * restored to the default state after the call to draw.
  */
-void gis_object_draw(GisObject *object, GisOpenGL *opengl)
+void grits_object_draw(GritsObject *object, GritsOpenGL *opengl)
 {
-	GisObjectClass *klass = GIS_OBJECT_GET_CLASS(object);
+	GritsObjectClass *klass = GRITS_OBJECT_GET_CLASS(object);
 	if (!klass->draw) {
-		g_warning("GisObject: draw - Unimplemented");
+		g_warning("GritsObject: draw - Unimplemented");
 		return;
 	}
 
@@ -64,7 +61,7 @@ void gis_object_draw(GisObject *object, GisOpenGL *opengl)
 	if (object->lod > 0) {
 		/* LOD test */
 		gdouble eye[3], obj[3];
-		gis_viewer_get_location(GIS_VIEWER(opengl), &eye[0], &eye[1], &eye[2]);
+		grits_viewer_get_location(GRITS_VIEWER(opengl), &eye[0], &eye[1], &eye[2]);
 		gdouble elev = eye[2];
 		lle2xyz(eye[0], eye[1], eye[2], &eye[0], &eye[1], &eye[2]);
 		lle2xyz(object->center.lat, object->center.lon, object->center.elev,
@@ -96,11 +93,11 @@ void gis_object_draw(GisObject *object, GisOpenGL *opengl)
 }
 
 /* GObject stuff */
-G_DEFINE_ABSTRACT_TYPE(GisObject, gis_object, G_TYPE_OBJECT);
-static void gis_object_init(GisObject *object)
+G_DEFINE_ABSTRACT_TYPE(GritsObject, grits_object, G_TYPE_OBJECT);
+static void grits_object_init(GritsObject *object)
 {
 }
 
-static void gis_object_class_init(GisObjectClass *klass)
+static void grits_object_class_init(GritsObjectClass *klass)
 {
 }
diff --git a/src/objects/grits-object.h b/src/objects/grits-object.h
index 298580b..b8a91a6 100644
--- a/src/objects/grits-object.h
+++ b/src/objects/grits-object.h
@@ -15,53 +15,53 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_OBJECT_H__
-#define __GIS_OBJECT_H__
+#ifndef __GRITS_OBJECT_H__
+#define __GRITS_OBJECT_H__
 
 #include <glib.h>
 #include <glib-object.h>
 #include "grits-util.h"
 
-/* GisObject */
-#define GIS_TYPE_OBJECT            (gis_object_get_type())
-#define GIS_OBJECT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_OBJECT, GisObject))
-#define GIS_IS_OBJECT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_OBJECT))
-#define GIS_OBJECT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_OBJECT, GisObjectClass))
-#define GIS_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_OBJECT))
-#define GIS_OBJECT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_OBJECT, GisObjectClass))
+/* GritsObject */
+#define GRITS_TYPE_OBJECT            (grits_object_get_type())
+#define GRITS_OBJECT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_OBJECT, GritsObject))
+#define GRITS_IS_OBJECT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_OBJECT))
+#define GRITS_OBJECT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_OBJECT, GritsObjectClass))
+#define GRITS_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_OBJECT))
+#define GRITS_OBJECT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_OBJECT, GritsObjectClass))
 
-typedef struct _GisObject      GisObject;
-typedef struct _GisObjectClass GisObjectClass;
+typedef struct _GritsObject      GritsObject;
+typedef struct _GritsObjectClass GritsObjectClass;
 
-struct _GisObject {
-	GObject  parent_instance;
-	GisPoint center;
-	gboolean hidden;
-	gdouble  lod;
+struct _GritsObject {
+	GObject    parent_instance;
+	GritsPoint center;
+	gboolean   hidden;
+	gdouble    lod;
 };
 
 #include "grits-opengl.h"
-struct _GisObjectClass {
+struct _GritsObjectClass {
 	GObjectClass parent_class;
 
 	/* Move some of these to GObject? */
-	void (*draw) (GisObject *object, GisOpenGL *opengl);
+	void (*draw) (GritsObject *object, GritsOpenGL *opengl);
 };
 
-GType gis_object_get_type(void);
+GType grits_object_get_type(void);
 
 /* Implemented by sub-classes */
-void gis_object_draw(GisObject *object, GisOpenGL *opengl);
+void grits_object_draw(GritsObject *object, GritsOpenGL *opengl);
 
 /**
- * gis_object_center:
- * @object: The #GisObject to get the center of
+ * grits_object_center:
+ * @object: The #GritsObject to get the center of
  * 
- * Get the #GisPoint representing the center of an object
+ * Get the #GritsPoint representing the center of an object
  *
  * Returns: the center point
  */
-#define gis_object_center(object) \
-	(&GIS_OBJECT(object)->center)
+#define grits_object_center(object) \
+	(&GRITS_OBJECT(object)->center)
 
 #endif
diff --git a/src/objects/grits-tile.c b/src/objects/grits-tile.c
index c71be50..ed3feec 100644
--- a/src/objects/grits-tile.c
+++ b/src/objects/grits-tile.c
@@ -16,19 +16,19 @@
  */
 
 /**
- * SECTION:gis-tile
+ * SECTION:grits-tile
  * @short_description: Latitude/longitude overlays
  *
- * Each #GisTile corresponds to a latitude/longitude box on the surface of the
- * earth. When drawn, the #GisTile renders an images associated with it to the
- * surface of the earth. This is primarily used to draw ground overlays.
+ * Each #GritsTile corresponds to a latitude/longitude box on the surface of
+ * the earth. When drawn, the #GritsTile renders an images associated with it
+ * to the surface of the earth. This is primarily used to draw ground overlays.
  *
- * Each GisTile can be split into subtiles in order to draw higher resolution
+ * Each GritsTile can be split into subtiles in order to draw higher resolution
  * overlays. Pointers to subtitles are stored in the parent tile and a parent
  * pointer is stored in each child.
  *
- * Each #GisTile has a data filed which must be set by the user in order for
- * the tile to be drawn. When used with GisOpenGL the data must be an integer
+ * Each #GritsTile has a data filed which must be set by the user in order for
+ * the tile to be drawn. When used with GritsOpenGL the data must be an integer
  * representing the OpenGL texture to use when drawing the tile.
  */
 
@@ -36,13 +36,13 @@
 #include <GL/gl.h>
 #include "grits-tile.h"
 
-gchar *gis_tile_path_table[2][2] = {
+gchar *grits_tile_path_table[2][2] = {
 	{"00.", "01."},
 	{"10.", "11."},
 };
 
 /**
- * gis_tile_new:
+ * grits_tile_new:
  * @parent: the parent for the tile, or NULL
  * @n:      the northern border of the tile
  * @s:      the southern border of the tile
@@ -51,21 +51,21 @@ gchar *gis_tile_path_table[2][2] = {
  *
  * Create a tile associated with a particular latitude/longitude box.
  *
- * Returns: the new #GisTile
+ * Returns: the new #GritsTile
  */
-GisTile *gis_tile_new(GisTile *parent,
+GritsTile *grits_tile_new(GritsTile *parent,
 	gdouble n, gdouble s, gdouble e, gdouble w)
 {
-	GisTile *tile = g_object_new(GIS_TYPE_TILE, NULL);
+	GritsTile *tile = g_object_new(GRITS_TYPE_TILE, NULL);
 	tile->parent = parent;
 	tile->atime  = time(NULL);
-	gis_bounds_set_bounds(&tile->coords, 0, 1, 1, 0);
-	gis_bounds_set_bounds(&tile->edge, n, s, e, w);
+	grits_bounds_set_bounds(&tile->coords, 0, 1, 1, 0);
+	grits_bounds_set_bounds(&tile->edge, n, s, e, w);
 	return tile;
 }
 
 /**
- * gis_tile_get_path:
+ * grits_tile_get_path:
  * @child: the tile to generate a path for
  *
  * Generate a string representation of a tiles location in a group of nested
@@ -75,15 +75,15 @@ GisTile *gis_tile_new(GisTile *parent,
  *
  * Returns: the path representing the tiles's location
  */
-gchar *gis_tile_get_path(GisTile *child)
+gchar *grits_tile_get_path(GritsTile *child)
 {
 	/* This could be easily cached if necessary */
 	int x, y;
 	GList *parts = NULL;
-	for (GisTile *parent = child->parent; parent; child = parent, parent = child->parent)
-		gis_tile_foreach_index(child, x, y)
+	for (GritsTile *parent = child->parent; parent; child = parent, parent = child->parent)
+		grits_tile_foreach_index(child, x, y)
 			if (parent->children[x][y] == child)
-				parts = g_list_prepend(parts, gis_tile_path_table[x][y]);
+				parts = g_list_prepend(parts, grits_tile_path_table[x][y]);
 	GString *path = g_string_new("");
 	for (GList *cur = parts; cur; cur = cur->next)
 		g_string_append(path, cur->data);
@@ -91,9 +91,9 @@ gchar *gis_tile_get_path(GisTile *child)
 	return g_string_free(path, FALSE);
 }
 
-static gdouble _gis_tile_get_min_dist(GisPoint *eye, GisBounds *bounds)
+static gdouble _grits_tile_get_min_dist(GritsPoint *eye, GritsBounds *bounds)
 {
-	GisPoint pos = {};
+	GritsPoint pos = {};
 	pos.lat = eye->lat > bounds->n ? bounds->n :
 	          eye->lat < bounds->s ? bounds->s : eye->lat;
 	pos.lon = eye->lon > bounds->e ? bounds->e :
@@ -106,10 +106,10 @@ static gdouble _gis_tile_get_min_dist(GisPoint *eye, GisBounds *bounds)
 	return distd(a, b);
 }
 
-static gboolean _gis_tile_precise(GisPoint *eye, GisBounds *bounds,
+static gboolean _grits_tile_precise(GritsPoint *eye, GritsBounds *bounds,
 		gdouble max_res, gint width, gint height)
 {
-	gdouble min_dist  = _gis_tile_get_min_dist(eye, bounds);
+	gdouble min_dist  = _grits_tile_get_min_dist(eye, bounds);
 	gdouble view_res  = MPPX(min_dist);
 
 	gdouble lat_point = bounds->n < 0 ? bounds->n :
@@ -134,7 +134,7 @@ static gboolean _gis_tile_precise(GisPoint *eye, GisBounds *bounds,
 }
 
 /**
- * gis_tile_update:
+ * grits_tile_update:
  * @root:      the root tile to split
  * @eye:       the point the tile is viewed from, for calculating distances
  * @res:       a maximum resolution in meters per pixel to split tiles to
@@ -149,12 +149,12 @@ static gboolean _gis_tile_precise(GisPoint *eye, GisBounds *bounds,
  * the tile is recursively subdivided until a sufficient resolution is
  * achieved.
  */
-void gis_tile_update(GisTile *root, GisPoint *eye,
+void grits_tile_update(GritsTile *root, GritsPoint *eye,
 		gdouble res, gint width, gint height,
-		GisTileLoadFunc load_func, gpointer user_data)
+		GritsTileLoadFunc load_func, gpointer user_data)
 {
 	root->atime = time(NULL);
-	//g_debug("GisTile: update - %p->atime = %u",
+	//g_debug("GritsTile: update - %p->atime = %u",
 	//		root, (guint)root->atime);
 	const gdouble rows = G_N_ELEMENTS(root->children);
 	const gdouble cols = G_N_ELEMENTS(root->children[0]);
@@ -163,21 +163,21 @@ void gis_tile_update(GisTile *root, GisPoint *eye,
 	const gdouble lat_step = lat_dist / rows;
 	const gdouble lon_step = lon_dist / cols;
 	int row, col;
-	gis_tile_foreach_index(root, row, col) {
-		GisTile **child = &root->children[row][col];
-		GisBounds edge;
+	grits_tile_foreach_index(root, row, col) {
+		GritsTile **child = &root->children[row][col];
+		GritsBounds edge;
 		edge.n = root->edge.n-(lat_step*(row+0));
 		edge.s = root->edge.n-(lat_step*(row+1));
 		edge.e = root->edge.w+(lon_step*(col+1));
 		edge.w = root->edge.w+(lon_step*(col+0));
-		if (!_gis_tile_precise(eye, &edge, res,
+		if (!_grits_tile_precise(eye, &edge, res,
 					width/cols, height/rows)) {
 			if (!*child) {
-				*child = gis_tile_new(root, edge.n, edge.s,
+				*child = grits_tile_new(root, edge.n, edge.s,
 						edge.e, edge.w);
 				load_func(*child, user_data);
 			}
-			gis_tile_update(*child, eye,
+			grits_tile_update(*child, eye,
 					res, width, height,
 					load_func, user_data);
 		}
@@ -185,7 +185,7 @@ void gis_tile_update(GisTile *root, GisPoint *eye,
 }
 
 /**
- * gis_tile_find:
+ * grits_tile_find:
  * @root: the root tile to search from
  * @lat:  target latitude
  * @lon:  target longitude
@@ -195,7 +195,7 @@ void gis_tile_update(GisTile *root, GisPoint *eye,
  * 
  * Returns: the child tile
  */
-GisTile *gis_tile_find(GisTile *root, gdouble lat, gdouble lon)
+GritsTile *grits_tile_find(GritsTile *root, gdouble lat, gdouble lon)
 {
 	gint    rows = G_N_ELEMENTS(root->children);
 	gint    cols = G_N_ELEMENTS(root->children[0]);
@@ -219,13 +219,13 @@ GisTile *gis_tile_find(GisTile *root, gdouble lat, gdouble lon)
 	if (row < 0 || row >= rows || col < 0 || col >= cols)
 		return NULL;
 	else if (root->children[row][col] && root->children[row][col]->data)
-		return gis_tile_find(root->children[row][col], lat, lon);
+		return grits_tile_find(root->children[row][col], lat, lon);
 	else
 		return root;
 }
 
 /**
- * gis_tile_gc:
+ * grits_tile_gc:
  * @root:      the root tile to start garbage collection at
  * @atime:     most recent time at which tiles will be kept
  * @free_func: function used to free the image when a new tile is collected
@@ -236,21 +236,21 @@ GisTile *gis_tile_find(GisTile *root, gdouble lat, gdouble lon)
  *
  * Returns: a pointer to the original tile, or NULL if it was garbage collected
  */
-GisTile *gis_tile_gc(GisTile *root, time_t atime,
-		GisTileFreeFunc free_func, gpointer user_data)
+GritsTile *grits_tile_gc(GritsTile *root, time_t atime,
+		GritsTileFreeFunc free_func, gpointer user_data)
 {
 	if (!root)
 		return NULL;
 	gboolean has_children = FALSE;
 	int x, y;
-	gis_tile_foreach_index(root, x, y) {
-		root->children[x][y] = gis_tile_gc(
+	grits_tile_foreach_index(root, x, y) {
+		root->children[x][y] = grits_tile_gc(
 				root->children[x][y], atime,
 				free_func, user_data);
 		if (root->children[x][y])
 			has_children = TRUE;
 	}
-	//g_debug("GisTile: gc - %p->atime=%u < atime=%u",
+	//g_debug("GritsTile: gc - %p->atime=%u < atime=%u",
 	//		root, (guint)root->atime, (guint)atime);
 	if (!has_children && root->atime < atime && root->data) {
 		free_func(root, user_data);
@@ -262,32 +262,32 @@ GisTile *gis_tile_gc(GisTile *root, time_t atime,
 
 /* Use GObject for this */
 /**
- * gis_tile_free:
+ * grits_tile_free:
  * @root:      the root tile to free
  * @free_func: function used to free the image when a new tile is collected
  * @user_data: user data to past to the free function
  *
  * Recursively free a tile and all it's children.
  */
-void gis_tile_free(GisTile *root, GisTileFreeFunc free_func, gpointer user_data)
+void grits_tile_free(GritsTile *root, GritsTileFreeFunc free_func, gpointer user_data)
 {
 	if (!root)
 		return;
-	GisTile *child;
-	gis_tile_foreach(root, child)
-		gis_tile_free(child, free_func, user_data);
+	GritsTile *child;
+	grits_tile_foreach(root, child)
+		grits_tile_free(child, free_func, user_data);
 	if (free_func)
 		free_func(root, user_data);
 	g_object_unref(root);
 }
 
 /* Draw a single tile */
-static void gis_tile_draw_one(GisTile *tile, GisOpenGL *opengl, GList *triangles)
+static void grits_tile_draw_one(GritsTile *tile, GritsOpenGL *opengl, GList *triangles)
 {
 	if (!tile || !tile->data)
 		return;
 	if (!triangles)
-		g_warning("GisOpenGL: _draw_tiles - No triangles to draw: edges=%f,%f,%f,%f",
+		g_warning("GritsOpenGL: _draw_tiles - No triangles to draw: edges=%f,%f,%f,%f",
 			tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
 	//g_message("drawing %4d triangles for tile edges=%7.2f,%7.2f,%7.2f,%7.2f",
 	//		g_list_length(triangles), tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
@@ -357,12 +357,12 @@ static void gis_tile_draw_one(GisTile *tile, GisOpenGL *opengl, GList *triangles
 }
 
 /* Draw the tile */
-static void gis_tile_draw_rec(GisTile *tile, GisOpenGL *opengl)
+static void grits_tile_draw_rec(GritsTile *tile, GritsOpenGL *opengl)
 {
 	/* Only draw children if possible */
 	gboolean has_children = FALSE;
-	GisTile *child;
-	gis_tile_foreach(tile, child)
+	GritsTile *child;
+	grits_tile_foreach(tile, child)
 		if (child && child->data)
 			has_children = TRUE;
 
@@ -376,10 +376,10 @@ static void gis_tile_draw_rec(GisTile *tile, GisOpenGL *opengl)
 		const gdouble lat_step = lat_dist / rows;
 		const gdouble lon_step = lon_dist / cols;
 		int row, col;
-		gis_tile_foreach_index(tile, row, col) {
-			GisTile *child = tile->children[row][col];
+		grits_tile_foreach_index(tile, row, col) {
+			GritsTile *child = tile->children[row][col];
 			if (child && child->data) {
-				gis_tile_draw_rec(child, opengl);
+				grits_tile_draw_rec(child, opengl);
 			} else {
 				const gdouble n = tile->edge.n-(lat_step*(row+0));
 				const gdouble s = tile->edge.n-(lat_step*(row+1));
@@ -395,27 +395,27 @@ static void gis_tile_draw_rec(GisTile *tile, GisOpenGL *opengl)
 				tile->edge.n, tile->edge.s, tile->edge.e, tile->edge.w);
 	}
 	if (triangles)
-		gis_tile_draw_one(tile, opengl, triangles);
+		grits_tile_draw_one(tile, opengl, triangles);
 	g_list_free(triangles);
 }
 
-static void gis_tile_draw(GisObject *tile, GisOpenGL *opengl)
+static void grits_tile_draw(GritsObject *tile, GritsOpenGL *opengl)
 {
 	glEnable(GL_DEPTH_TEST);
 	glDepthFunc(GL_LESS);
-	gis_tile_draw_rec(GIS_TILE(tile), opengl);
+	grits_tile_draw_rec(GRITS_TILE(tile), opengl);
 }
 
 
 /* GObject code */
-G_DEFINE_TYPE(GisTile, gis_tile, GIS_TYPE_OBJECT);
-static void gis_tile_init(GisTile *tile)
+G_DEFINE_TYPE(GritsTile, grits_tile, GRITS_TYPE_OBJECT);
+static void grits_tile_init(GritsTile *tile)
 {
 }
 
-static void gis_tile_class_init(GisTileClass *klass)
+static void grits_tile_class_init(GritsTileClass *klass)
 {
-	g_debug("GisTile: class_init");
-	GisObjectClass *object_class = GIS_OBJECT_CLASS(klass);
-	object_class->draw = gis_tile_draw;
+	g_debug("GritsTile: class_init");
+	GritsObjectClass *object_class = GRITS_OBJECT_CLASS(klass);
+	object_class->draw = grits_tile_draw;
 }
diff --git a/src/objects/grits-tile.h b/src/objects/grits-tile.h
index 91f5ac6..309f4bc 100644
--- a/src/objects/grits-tile.h
+++ b/src/objects/grits-tile.h
@@ -15,25 +15,25 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __GIS_TILE_H__
-#define __GIS_TILE_H__
+#ifndef __GRITS_TILE_H__
+#define __GRITS_TILE_H__
 
 #include <glib.h>
 #include <glib-object.h>
 #include "grits-object.h"
 
-#define GIS_TYPE_TILE            (gis_tile_get_type())
-#define GIS_TILE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_TILE, GisTile))
-#define GIS_IS_TILE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_TILE))
-#define GIS_TILE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_TILE, GisTileClass))
-#define GIS_IS_TILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_TILE))
-#define GIS_TILE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_TILE, GisTileClass))
+#define GRITS_TYPE_TILE            (grits_tile_get_type())
+#define GRITS_TILE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_TILE, GritsTile))
+#define GRITS_IS_TILE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_TILE))
+#define GRITS_TILE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_TILE, GritsTileClass))
+#define GRITS_IS_TILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_TILE))
+#define GRITS_TILE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_TILE, GritsTileClass))
 
-typedef struct _GisTile      GisTile;
-typedef struct _GisTileClass GisTileClass;
+typedef struct _GritsTile      GritsTile;
+typedef struct _GritsTileClass GritsTileClass;
 
-struct _GisTile {
-	GisObject  parent_instance;
+struct _GritsTile {
+	GritsObject  parent_instance;
 
 	/* Pointer to the tile data */
 	gpointer data;
@@ -42,94 +42,94 @@ struct _GisTile {
 	gint zindex;
 
 	/* North,South,East,West limits */
-	GisBounds edge;
+	GritsBounds edge;
 
 	/* Texture mapping coordinates */
-	GisBounds coords;
+	GritsBounds coords;
 
 	/* Pointers to parent/child nodes */
-	GisTile *parent;
-	GisTile *children[2][2];
+	GritsTile *parent;
+	GritsTile *children[2][2];
 
 	/* Last access time (for garbage collection) */
 	time_t atime;
 };
 
-struct _GisTileClass {
-	GisObjectClass parent_class;
+struct _GritsTileClass {
+	GritsObjectClass parent_class;
 };
 
 /**
- * GisTileLoadFunc:
+ * GritsTileLoadFunc:
  * @tile:      the tile to load
  * @user_data: data paseed to the function
  *
- * Used to load the image data associated with a tile. For GisOpenGL, this
+ * Used to load the image data associated with a tile. For GritsOpenGL, this
  * function should store the OpenGL texture number in the tiles data field.
  */
-typedef void (*GisTileLoadFunc)(GisTile *tile, gpointer user_data);
+typedef void (*GritsTileLoadFunc)(GritsTile *tile, gpointer user_data);
 
 /**
- * GisTileFreeFunc:
+ * GritsTileFreeFunc:
  * @tile:      the tile to free
  * @user_data: data paseed to the function
  *
  * Used to free the image data associated with a tile
  */
-typedef void (*GisTileFreeFunc)(GisTile *tile, gpointer user_data);
+typedef void (*GritsTileFreeFunc)(GritsTile *tile, gpointer user_data);
 
 /* Forech functions */
 /**
- * gis_tile_foreach:
- * @parent: the #GisTile to iterate over
- * @child:  a pointer to a #GisTile to store the current subtile 
+ * grits_tile_foreach:
+ * @parent: the #GritsTile to iterate over
+ * @child:  a pointer to a #GritsTile to store the current subtile 
  *
  * Iterate over each imediate subtile of @parent. 
  */
-#define gis_tile_foreach(parent, child) \
+#define grits_tile_foreach(parent, child) \
 	for (int _x = 0; _x < G_N_ELEMENTS(parent->children); _x++) \
 	for (int _y = 0; child = parent->children[_x][_y], \
 		_y < G_N_ELEMENTS(parent->children[_x]); _y++)
 
 /**
- * gis_tile_foreach_index:
- * @parent: the #GisTile to iterate over
+ * grits_tile_foreach_index:
+ * @parent: the #GritsTile to iterate over
  * @x:      integer to store the x index of the current subtile
  * @y:      integer to store the y index of the current subtile
  *
  * Iterate over each imediate subtile of @parent. 
  */
-#define gis_tile_foreach_index(parent, x, y) \
+#define grits_tile_foreach_index(parent, x, y) \
 	for (x = 0; x < G_N_ELEMENTS(parent->children); x++) \
 	for (y = 0; y < G_N_ELEMENTS(parent->children[x]); y++)
 
 /* Path to string table, keep in sync with tile->children */
-extern gchar *gis_tile_path_table[2][2];
+extern gchar *grits_tile_path_table[2][2];
 
-GType gis_tile_get_type(void);
+GType grits_tile_get_type(void);
 
 /* Allocate a new Tile */
-GisTile *gis_tile_new(GisTile *parent,
+GritsTile *grits_tile_new(GritsTile *parent,
 	gdouble n, gdouble s, gdouble e, gdouble w);
 
 /* Return a string representation of the tile's path */
-gchar *gis_tile_get_path(GisTile *child);
+gchar *grits_tile_get_path(GritsTile *child);
 
 /* Update a root tile */
 /* Based on eye distance */
-void gis_tile_update(GisTile *root, GisPoint *eye,
+void grits_tile_update(GritsTile *root, GritsPoint *eye,
 		gdouble res, gint width, gint height,
-		GisTileLoadFunc load_func, gpointer user_data);
+		GritsTileLoadFunc load_func, gpointer user_data);
 
 /* Find the leaf tile containing lat-lon */
-GisTile *gis_tile_find(GisTile *root, gdouble lat, gdouble lon);
+GritsTile *grits_tile_find(GritsTile *root, gdouble lat, gdouble lon);
 
 /* Delete nodes that haven't been accessed since atime */
-GisTile *gis_tile_gc(GisTile *root, time_t atime,
-		GisTileFreeFunc free_func, gpointer user_data);
+GritsTile *grits_tile_gc(GritsTile *root, time_t atime,
+		GritsTileFreeFunc free_func, gpointer user_data);
 
 /* Free a tile and all it's children */
-void gis_tile_free(GisTile *root,
-		GisTileFreeFunc free_func, gpointer user_data);
+void grits_tile_free(GritsTile *root,
+		GritsTileFreeFunc free_func, gpointer user_data);
 
 #endif
diff --git a/src/plugins/elev.c b/src/plugins/elev.c
index f59238d..251ec74 100644
--- a/src/plugins/elev.c
+++ b/src/plugins/elev.c
@@ -19,7 +19,7 @@
  * SECTION:elev
  * @short_description: Elevation plugin
  *
- * #GisPluginElev provides access to ground elevation. It does this in two ways:
+ * #GritsPluginElev provides access to ground elevation. It does this in two ways:
  * First, it provides a height function used by the viewer when drawing the
  * world. Second, it can load the elevation data into an image and draw a
  * greyscale elevation overlay on the planets surface.
@@ -39,17 +39,17 @@
 #define TILE_SIZE      (TILE_WIDTH*TILE_HEIGHT*sizeof(guint16))
 
 struct _TileData {
-	/* OpenGL has to be first to make gis_opengl_render_tiles happy */
+	/* OpenGL has to be first to make grits_opengl_render_tiles happy */
 	guint      opengl;
 	guint16   *bil;
 };
 
 static gdouble _height_func(gdouble lat, gdouble lon, gpointer _elev)
 {
-	GisPluginElev *elev = _elev;
+	GritsPluginElev *elev = _elev;
 	if (!elev) return 0;
 
-	GisTile *tile = gis_tile_find(elev->tiles, lat, lon);
+	GritsTile *tile = grits_tile_find(elev->tiles, lat, lon);
 	if (!tile) return 0;
 
 	struct _TileData *data = tile->data;
@@ -101,9 +101,9 @@ static gdouble _height_func(gdouble lat, gdouble lon, gpointer _elev)
 #define LOAD_BIL    TRUE
 #define LOAD_OPENGL FALSE
 struct _LoadTileData {
-	GisPluginElev    *elev;
+	GritsPluginElev    *elev;
 	gchar            *path;
-	GisTile          *tile;
+	GritsTile          *tile;
 	GdkPixbuf        *pixbuf;
 	struct _TileData *data;
 };
@@ -112,9 +112,9 @@ static guint16 *_load_bil(gchar *path)
 	gsize len;
 	gchar *data = NULL;
 	g_file_get_contents(path, &data, &len, NULL);
-	g_debug("GisPluginElev: load_bil %p", data);
+	g_debug("GritsPluginElev: load_bil %p", data);
 	if (len != TILE_SIZE) {
-		g_warning("GisPluginElev: _load_bil - unexpected tile size %d, != %d",
+		g_warning("GritsPluginElev: _load_bil - unexpected tile size %d, != %d",
 				len, TILE_SIZE);
 		g_free(data);
 		return NULL;
@@ -140,7 +140,7 @@ static GdkPixbuf *_load_pixbuf(guint16 *bil)
 				pixels[r*stride + c*nchan + 3] = 128;
 		}
 	}
-	g_debug("GisPluginElev: load_pixbuf %p", pixbuf);
+	g_debug("GritsPluginElev: load_pixbuf %p", pixbuf);
 	return pixbuf;
 }
 static guint _load_opengl(GdkPixbuf *pixbuf)
@@ -166,15 +166,15 @@ static guint _load_opengl(GdkPixbuf *pixbuf)
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
 
-	g_debug("GisPluginElev: load_opengl %d", opengl);
+	g_debug("GritsPluginElev: load_opengl %d", opengl);
 	return opengl;
 }
 static gboolean _load_tile_cb(gpointer _load)
 {
 	struct _LoadTileData *load = _load;
-	g_debug("GisPluginElev: _load_tile_cb: %s", load->path);
-	GisPluginElev    *elev   = load->elev;
-	GisTile          *tile   = load->tile;
+	g_debug("GritsPluginElev: _load_tile_cb: %s", load->path);
+	GritsPluginElev    *elev   = load->elev;
+	GritsTile          *tile   = load->tile;
 	GdkPixbuf        *pixbuf = load->pixbuf;
 	struct _TileData *data   = load->data;
 	g_free(load->path);
@@ -188,7 +188,8 @@ static gboolean _load_tile_cb(gpointer _load)
 	/* Do necessasairy processing */
 	/* TODO: Lock this and move to thread, can remove elev from _load then */
 	if (LOAD_BIL)
-		gis_viewer_set_height_func(elev->viewer, &tile->edge, _height_func, elev, TRUE);
+		grits_viewer_set_height_func(elev->viewer, &tile->edge,
+				_height_func, elev, TRUE);
 
 	/* Cleanup unneeded things */
 	if (!LOAD_BIL)
@@ -198,13 +199,13 @@ static gboolean _load_tile_cb(gpointer _load)
 
 	return FALSE;
 }
-static void _load_tile(GisTile *tile, gpointer _elev)
+static void _load_tile(GritsTile *tile, gpointer _elev)
 {
-	GisPluginElev *elev = _elev;
+	GritsPluginElev *elev = _elev;
 
 	struct _LoadTileData *load = g_new0(struct _LoadTileData, 1);
-	load->path = gis_wms_fetch(elev->wms, tile, GIS_ONCE, NULL, NULL);
-	g_debug("GisPluginElev: _load_tile: %s", load->path);
+	load->path = grits_wms_fetch(elev->wms, tile, GRITS_ONCE, NULL, NULL);
+	g_debug("GritsPluginElev: _load_tile: %s", load->path);
 	load->elev = elev;
 	load->tile = tile;
 	load->data = g_new0(struct _TileData, 1);
@@ -235,24 +236,24 @@ static gboolean _free_tile_cb(gpointer _data)
 	g_free(data);
 	return FALSE;
 }
-static void _free_tile(GisTile *tile, gpointer _elev)
+static void _free_tile(GritsTile *tile, gpointer _elev)
 {
-	g_debug("GisPluginElev: _free_tile: %p", tile->data);
+	g_debug("GritsPluginElev: _free_tile: %p", tile->data);
 	if (tile->data)
 		g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
 }
 
 static gpointer _update_tiles(gpointer _elev)
 {
-	GisPluginElev *elev = _elev;
+	GritsPluginElev *elev = _elev;
 	if (!g_mutex_trylock(elev->mutex))
 		return NULL;
-	GisPoint eye;
-	gis_viewer_get_location(elev->viewer, &eye.lat, &eye.lon, &eye.elev);
-	gis_tile_update(elev->tiles, &eye,
+	GritsPoint eye;
+	grits_viewer_get_location(elev->viewer, &eye.lat, &eye.lon, &eye.elev);
+	grits_tile_update(elev->tiles, &eye,
 			MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
 			_load_tile, elev);
-	gis_tile_gc(elev->tiles, time(NULL)-10,
+	grits_tile_gc(elev->tiles, time(NULL)-10,
 			_free_tile, elev);
 	g_mutex_unlock(elev->mutex);
 	return NULL;
@@ -261,13 +262,13 @@ static gpointer _update_tiles(gpointer _elev)
 /*************
  * Callbacks *
  *************/
-static void _on_location_changed(GisViewer *viewer,
-		gdouble lat, gdouble lon, gdouble elevation, GisPluginElev *elev)
+static void _on_location_changed(GritsViewer *viewer,
+		gdouble lat, gdouble lon, gdouble elevation, GritsPluginElev *elev)
 {
 	g_thread_create(_update_tiles, elev, FALSE, NULL);
 }
 
-static gpointer _threaded_init(GisPluginElev *elev)
+static gpointer _threaded_init(GritsPluginElev *elev)
 {
 	_load_tile(elev->tiles, elev);
 	_update_tiles(elev);
@@ -278,17 +279,17 @@ static gpointer _threaded_init(GisPluginElev *elev)
  * Methods *
  ***********/
 /**
- * gis_plugin_elev_new:
- * @viewer: the #GisViewer to use for drawing
+ * grits_plugin_elev_new:
+ * @viewer: the #GritsViewer to use for drawing
  *
  * Create a new instance of the elevation plugin.
  *
- * Returns: the new #GisPluginElev
+ * Returns: the new #GritsPluginElev
  */
-GisPluginElev *gis_plugin_elev_new(GisViewer *viewer)
+GritsPluginElev *grits_plugin_elev_new(GritsViewer *viewer)
 {
-	g_debug("GisPluginElev: new");
-	GisPluginElev *elev = g_object_new(GIS_TYPE_PLUGIN_ELEV, NULL);
+	g_debug("GritsPluginElev: new");
+	GritsPluginElev *elev = g_object_new(GRITS_TYPE_PLUGIN_ELEV, NULL);
 	elev->viewer = g_object_ref(viewer);
 
 	/* Load initial tiles */
@@ -300,7 +301,7 @@ GisPluginElev *gis_plugin_elev_new(GisViewer *viewer)
 
 	/* Add renderers */
 	if (LOAD_OPENGL)
-		gis_viewer_add(viewer, GIS_OBJECT(elev->tiles), GIS_LEVEL_WORLD, 0);
+		grits_viewer_add(viewer, GRITS_OBJECT(elev->tiles), GRITS_LEVEL_WORLD, 0);
 
 	return elev;
 }
@@ -310,55 +311,55 @@ GisPluginElev *gis_plugin_elev_new(GisViewer *viewer)
  * GObject code *
  ****************/
 /* Plugin init */
-static void gis_plugin_elev_plugin_init(GisPluginInterface *iface);
-G_DEFINE_TYPE_WITH_CODE(GisPluginElev, gis_plugin_elev, G_TYPE_OBJECT,
-		G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
-			gis_plugin_elev_plugin_init));
-static void gis_plugin_elev_plugin_init(GisPluginInterface *iface)
+static void grits_plugin_elev_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginElev, grits_plugin_elev, G_TYPE_OBJECT,
+		G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+			grits_plugin_elev_plugin_init));
+static void grits_plugin_elev_plugin_init(GritsPluginInterface *iface)
 {
-	g_debug("GisPluginElev: plugin_init");
+	g_debug("GritsPluginElev: plugin_init");
 	/* Add methods to the interface */
 }
 /* Class/Object init */
-static void gis_plugin_elev_init(GisPluginElev *elev)
+static void grits_plugin_elev_init(GritsPluginElev *elev)
 {
-	g_debug("GisPluginElev: init");
+	g_debug("GritsPluginElev: init");
 	/* Set defaults */
 	elev->mutex = g_mutex_new();
-	elev->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
-	elev->wms   = gis_wms_new(
+	elev->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+	elev->wms   = grits_wms_new(
 		"http://www.nasa.network.com/elev";, "srtm30", "application/bil",
 		"srtm/", "bil", TILE_WIDTH, TILE_HEIGHT);
 }
-static void gis_plugin_elev_dispose(GObject *gobject)
+static void grits_plugin_elev_dispose(GObject *gobject)
 {
-	g_debug("GisPluginElev: dispose");
-	GisPluginElev *elev = GIS_PLUGIN_ELEV(gobject);
+	g_debug("GritsPluginElev: dispose");
+	GritsPluginElev *elev = GRITS_PLUGIN_ELEV(gobject);
 	/* Drop references */
 	if (LOAD_BIL)
-		gis_viewer_clear_height_func(elev->viewer);
+		grits_viewer_clear_height_func(elev->viewer);
 	if (elev->viewer) {
 		g_signal_handler_disconnect(elev->viewer, elev->sigid);
 		g_object_unref(elev->viewer);
 		elev->viewer = NULL;
 	}
-	G_OBJECT_CLASS(gis_plugin_elev_parent_class)->dispose(gobject);
+	G_OBJECT_CLASS(grits_plugin_elev_parent_class)->dispose(gobject);
 }
-static void gis_plugin_elev_finalize(GObject *gobject)
+static void grits_plugin_elev_finalize(GObject *gobject)
 {
-	g_debug("GisPluginElev: finalize");
-	GisPluginElev *elev = GIS_PLUGIN_ELEV(gobject);
+	g_debug("GritsPluginElev: finalize");
+	GritsPluginElev *elev = GRITS_PLUGIN_ELEV(gobject);
 	/* Free data */
-	gis_tile_free(elev->tiles, _free_tile, elev);
-	gis_wms_free(elev->wms);
+	grits_tile_free(elev->tiles, _free_tile, elev);
+	grits_wms_free(elev->wms);
 	g_mutex_free(elev->mutex);
-	G_OBJECT_CLASS(gis_plugin_elev_parent_class)->finalize(gobject);
+	G_OBJECT_CLASS(grits_plugin_elev_parent_class)->finalize(gobject);
 
 }
-static void gis_plugin_elev_class_init(GisPluginElevClass *klass)
+static void grits_plugin_elev_class_init(GritsPluginElevClass *klass)
 {
-	g_debug("GisPluginElev: class_init");
+	g_debug("GritsPluginElev: class_init");
 	GObjectClass *gobject_class = (GObjectClass*)klass;
-	gobject_class->dispose  = gis_plugin_elev_dispose;
-	gobject_class->finalize = gis_plugin_elev_finalize;
+	gobject_class->dispose  = grits_plugin_elev_dispose;
+	gobject_class->finalize = grits_plugin_elev_finalize;
 }
diff --git a/src/plugins/elev.h b/src/plugins/elev.h
index d32352b..9f09c3e 100644
--- a/src/plugins/elev.h
+++ b/src/plugins/elev.h
@@ -20,34 +20,34 @@
 
 #include <glib-object.h>
 
-#define GIS_TYPE_PLUGIN_ELEV            (gis_plugin_elev_get_type ())
-#define GIS_PLUGIN_ELEV(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PLUGIN_ELEV, GisPluginElev))
-#define GIS_IS_PLUGIN_ELEV(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PLUGIN_ELEV))
-#define GIS_PLUGIN_ELEV_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PLUGIN_ELEV, GisPluginElevClass))
-#define GIS_IS_PLUGIN_ELEV_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PLUGIN_ELEV))
-#define GIS_PLUGIN_ELEV_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PLUGIN_ELEV, GisPluginElevClass))
+#define GRITS_TYPE_PLUGIN_ELEV            (grits_plugin_elev_get_type ())
+#define GRITS_PLUGIN_ELEV(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PLUGIN_ELEV, GritsPluginElev))
+#define GRITS_IS_PLUGIN_ELEV(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PLUGIN_ELEV))
+#define GRITS_PLUGIN_ELEV_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PLUGIN_ELEV, GritsPluginElevClass))
+#define GRITS_IS_PLUGIN_ELEV_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PLUGIN_ELEV))
+#define GRITS_PLUGIN_ELEV_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PLUGIN_ELEV, GritsPluginElevClass))
 
-typedef struct _GisPluginElev      GisPluginElev;
-typedef struct _GisPluginElevClass GisPluginElevClass;
+typedef struct _GritsPluginElev      GritsPluginElev;
+typedef struct _GritsPluginElevClass GritsPluginElevClass;
 
-struct _GisPluginElev {
+struct _GritsPluginElev {
 	GObject parent_instance;
 
 	/* instance members */
-	GisViewer *viewer;
-	GisTile   *tiles;
-	GisWms    *wms;
-	GMutex    *mutex;
-	gulong     sigid;
+	GritsViewer *viewer;
+	GritsTile   *tiles;
+	GritsWms    *wms;
+	GMutex      *mutex;
+	gulong       sigid;
 };
 
-struct _GisPluginElevClass {
+struct _GritsPluginElevClass {
 	GObjectClass parent_class;
 };
 
-GType gis_plugin_elev_get_type();
+GType grits_plugin_elev_get_type();
 
 /* Methods */
-GisPluginElev *gis_plugin_elev_new(GisViewer *viewer);
+GritsPluginElev *grits_plugin_elev_new(GritsViewer *viewer);
 
 #endif
diff --git a/src/plugins/env.c b/src/plugins/env.c
index 129e759..3a1f324 100644
--- a/src/plugins/env.c
+++ b/src/plugins/env.c
@@ -19,7 +19,7 @@
  * SECTION:env
  * @short_description: Environment plugin
  *
- * #GisPluginEnv provides environmental information such as sky images. It can
+ * #GritsPluginEnv provides environmental information such as sky images. It can
  * also paint a blank overlay on the surface so that other plugins can draw
  * transparent overlays nicely.
  */
@@ -35,13 +35,13 @@
 /***********
  * Helpers *
  ***********/
-static void expose(GisCallback *callback, GisOpenGL *opengl, gpointer _env)
+static void expose(GritsCallback *callback, GritsOpenGL *opengl, gpointer _env)
 {
-	GisPluginEnv *env = GIS_PLUGIN_ENV(_env);
-	g_debug("GisPluginEnv: expose");
+	GritsPluginEnv *env = GRITS_PLUGIN_ENV(_env);
+	g_debug("GritsPluginEnv: expose");
 
 	gdouble lat, lon, elev;
-	gis_viewer_get_location(env->viewer, &lat, &lon, &elev);
+	grits_viewer_get_location(env->viewer, &lat, &lon, &elev);
 
 	/* Misc */
 	gdouble rg   = MAX(0, 1-(elev/40000));
@@ -55,7 +55,7 @@ static void expose(GisCallback *callback, GisOpenGL *opengl, gpointer _env)
 	glDisable(GL_LIGHTING);
 	glMatrixMode(GL_MODELVIEW);
 	glBlendFunc(GL_SRC_ALPHA, GL_DST_ALPHA);
-	gis_viewer_center_position(env->viewer, lat, lon, -EARTH_R);
+	grits_viewer_center_position(env->viewer, lat, lon, -EARTH_R);
 
 	gdouble ds  = EARTH_R+elev;     // distance to self
 	gdouble da  = EARTH_R+300000;   // distance to top of atmosphere
@@ -82,30 +82,30 @@ static void expose(GisCallback *callback, GisOpenGL *opengl, gpointer _env)
  * Methods *
  ***********/
 /**
- * gis_plugin_env_new:
- * @viewer: the #GisViewer to use for drawing
- * @prefs:  the #GisPrefs for storing configurations
+ * grits_plugin_env_new:
+ * @viewer: the #GritsViewer to use for drawing
+ * @prefs:  the #GritsPrefs for storing configurations
  *
  * Create a new instance of the environment plugin.
  *
- * Returns: the new #GisPluginEnv
+ * Returns: the new #GritsPluginEnv
  */
-GisPluginEnv *gis_plugin_env_new(GisViewer *viewer, GisPrefs *prefs)
+GritsPluginEnv *grits_plugin_env_new(GritsViewer *viewer, GritsPrefs *prefs)
 {
-	g_debug("GisPluginEnv: new");
-	GisPluginEnv *env = g_object_new(GIS_TYPE_PLUGIN_ENV, NULL);
+	g_debug("GritsPluginEnv: new");
+	GritsPluginEnv *env = g_object_new(GRITS_TYPE_PLUGIN_ENV, NULL);
 	env->viewer = g_object_ref(viewer);
 
 	/* Create objects */
-	GisCallback *callback   = gis_callback_new(expose, env);
-	GisTile     *background = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+	GritsCallback *callback   = grits_callback_new(expose, env);
+	GritsTile     *background = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
 	glGenTextures(1, &env->tex);
 	background->data = &env->tex;
 
 	/* Add renderers */
 	gpointer ref1, ref2;
-	ref1 = gis_viewer_add(viewer, GIS_OBJECT(callback),   GIS_LEVEL_BACKGROUND, FALSE);
-	ref2 = gis_viewer_add(viewer, GIS_OBJECT(background), GIS_LEVEL_BACKGROUND, FALSE);
+	ref1 = grits_viewer_add(viewer, GRITS_OBJECT(callback),   GRITS_LEVEL_BACKGROUND, FALSE);
+	ref2 = grits_viewer_add(viewer, GRITS_OBJECT(background), GRITS_LEVEL_BACKGROUND, FALSE);
 	env->refs = g_list_prepend(env->refs, ref1);
 	env->refs = g_list_prepend(env->refs, ref2);
 
@@ -117,39 +117,39 @@ GisPluginEnv *gis_plugin_env_new(GisViewer *viewer, GisPrefs *prefs)
  * GObject code *
  ****************/
 /* Plugin init */
-static void gis_plugin_env_plugin_init(GisPluginInterface *iface);
-G_DEFINE_TYPE_WITH_CODE(GisPluginEnv, gis_plugin_env, G_TYPE_OBJECT,
-		G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
-			gis_plugin_env_plugin_init));
-static void gis_plugin_env_plugin_init(GisPluginInterface *iface)
+static void grits_plugin_env_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginEnv, grits_plugin_env, G_TYPE_OBJECT,
+		G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+			grits_plugin_env_plugin_init));
+static void grits_plugin_env_plugin_init(GritsPluginInterface *iface)
 {
-	g_debug("GisPluginEnv: plugin_init");
+	g_debug("GritsPluginEnv: plugin_init");
 	/* Add methods to the interface */
 }
 /* Class/Object init */
-static void gis_plugin_env_init(GisPluginEnv *env)
+static void grits_plugin_env_init(GritsPluginEnv *env)
 {
-	g_debug("GisPluginEnv: init");
+	g_debug("GritsPluginEnv: init");
 	/* Set defaults */
 }
-static void gis_plugin_env_dispose(GObject *gobject)
+static void grits_plugin_env_dispose(GObject *gobject)
 {
-	g_debug("GisPluginEnv: dispose");
-	GisPluginEnv *env = GIS_PLUGIN_ENV(gobject);
+	g_debug("GritsPluginEnv: dispose");
+	GritsPluginEnv *env = GRITS_PLUGIN_ENV(gobject);
 	/* Drop references */
 	if (env->viewer) {
 		for (GList *cur = env->refs; cur; cur = cur->next)
-			gis_viewer_remove(env->viewer, cur->data);
+			grits_viewer_remove(env->viewer, cur->data);
 		g_list_free(env->refs);
 		g_object_unref(env->viewer);
 		glDeleteTextures(1, &env->tex);
 		env->viewer = NULL;
 	}
-	G_OBJECT_CLASS(gis_plugin_env_parent_class)->dispose(gobject);
+	G_OBJECT_CLASS(grits_plugin_env_parent_class)->dispose(gobject);
 }
-static void gis_plugin_env_class_init(GisPluginEnvClass *klass)
+static void grits_plugin_env_class_init(GritsPluginEnvClass *klass)
 {
-	g_debug("GisPluginEnv: class_init");
+	g_debug("GritsPluginEnv: class_init");
 	GObjectClass *gobject_class = (GObjectClass*)klass;
-	gobject_class->dispose = gis_plugin_env_dispose;
+	gobject_class->dispose = grits_plugin_env_dispose;
 }
diff --git a/src/plugins/env.h b/src/plugins/env.h
index 7b73a2e..0f5b7f7 100644
--- a/src/plugins/env.h
+++ b/src/plugins/env.h
@@ -20,33 +20,33 @@
 
 #include <glib-object.h>
 
-#define GIS_TYPE_PLUGIN_ENV            (gis_plugin_env_get_type ())
-#define GIS_PLUGIN_ENV(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PLUGIN_ENV, GisPluginEnv))
-#define GIS_IS_PLUGIN_ENV(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PLUGIN_ENV))
-#define GIS_PLUGIN_ENV_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PLUGIN_ENV, GisPluginEnvClass))
-#define GIS_IS_PLUGIN_ENV_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PLUGIN_ENV))
-#define GIS_PLUGIN_ENV_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PLUGIN_ENV, GisPluginEnvClass))
+#define GRITS_TYPE_PLUGIN_ENV            (grits_plugin_env_get_type ())
+#define GRITS_PLUGIN_ENV(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PLUGIN_ENV, GritsPluginEnv))
+#define GRITS_IS_PLUGIN_ENV(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PLUGIN_ENV))
+#define GRITS_PLUGIN_ENV_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PLUGIN_ENV, GritsPluginEnvClass))
+#define GRITS_IS_PLUGIN_ENV_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PLUGIN_ENV))
+#define GRITS_PLUGIN_ENV_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PLUGIN_ENV, GritsPluginEnvClass))
 
-typedef struct _GisPluginEnv      GisPluginEnv;
-typedef struct _GisPluginEnvClass GisPluginEnvClass;
+typedef struct _GritsPluginEnv      GritsPluginEnv;
+typedef struct _GritsPluginEnvClass GritsPluginEnvClass;
 
-struct _GisPluginEnv {
+struct _GritsPluginEnv {
 	GObject parent_instance;
 
 	/* instance members */
-	GisViewer *viewer;
-	guint      tex;
-	GisTile   *background;
-	GList     *refs;
+	GritsViewer *viewer;
+	guint        tex;
+	GritsTile   *background;
+	GList       *refs;
 };
 
-struct _GisPluginEnvClass {
+struct _GritsPluginEnvClass {
 	GObjectClass parent_class;
 };
 
-GType gis_plugin_env_get_type();
+GType grits_plugin_env_get_type();
 
 /* Methods */
-GisPluginEnv *gis_plugin_env_new(GisViewer *viewer, GisPrefs *prefs);
+GritsPluginEnv *grits_plugin_env_new(GritsViewer *viewer, GritsPrefs *prefs);
 
 #endif
diff --git a/src/plugins/map.c b/src/plugins/map.c
index 13e9185..6c73796 100644
--- a/src/plugins/map.c
+++ b/src/plugins/map.c
@@ -19,7 +19,7 @@
  * SECTION:map
  * @short_description: Map plugin
  *
- * #GisPluginMap provides map overlays. Much of this data is obtained from the
+ * #GritsPluginMap provides map overlays. Much of this data is obtained from the
  * OpenStreetMap project.
  */
 
@@ -45,23 +45,23 @@ static const guchar colormap[][2][4] = {
 };
 
 struct _LoadTileData {
-	GisPluginMap *map;
-	GisTile      *tile;
-	gchar        *path;
+	GritsPluginMap *map;
+	GritsTile      *tile;
+	gchar          *path;
 };
 static gboolean _load_tile_cb(gpointer _data)
 {
 	struct _LoadTileData *data = _data;
-	GisPluginMap *map  = data->map;
-	GisTile      *tile = data->tile;
-	gchar        *path = data->path;
+	GritsPluginMap *map  = data->map;
+	GritsTile      *tile = data->tile;
+	gchar          *path = data->path;
 	g_free(data);
 
 	/* Load pixbuf */
-	g_debug("GisPluginMap: _load_tile_cb start");
+	g_debug("GritsPluginMap: _load_tile_cb start");
 	GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
 	if (!pixbuf) {
-		g_warning("GisPluginMap: _load_tile - Error loading pixbuf %s", path);
+		g_warning("GritsPluginMap: _load_tile - Error loading pixbuf %s", path);
 		g_remove(path);
 		g_free(path);
 		return FALSE;
@@ -108,16 +108,16 @@ static gboolean _load_tile_cb(gpointer _data)
 	return FALSE;
 }
 
-static void _load_tile(GisTile *tile, gpointer _map)
+static void _load_tile(GritsTile *tile, gpointer _map)
 {
-	GisPluginMap *map = _map;
-	g_debug("GisPluginMap: _load_tile start %p", g_thread_self());
+	GritsPluginMap *map = _map;
+	g_debug("GritsPluginMap: _load_tile start %p", g_thread_self());
 	struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
 	data->map  = map;
 	data->tile = tile;
-	data->path = gis_wms_fetch(map->wms, tile, GIS_ONCE, NULL, NULL);
+	data->path = grits_wms_fetch(map->wms, tile, GRITS_ONCE, NULL, NULL);
 	g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
-	g_debug("GisPluginMap: _load_tile end %p", g_thread_self());
+	g_debug("GritsPluginMap: _load_tile end %p", g_thread_self());
 }
 
 static gboolean _free_tile_cb(gpointer data)
@@ -126,25 +126,25 @@ static gboolean _free_tile_cb(gpointer data)
 	g_free(data);
 	return FALSE;
 }
-static void _free_tile(GisTile *tile, gpointer _map)
+static void _free_tile(GritsTile *tile, gpointer _map)
 {
-	g_debug("GisPluginMap: _free_tile: %p", tile->data);
+	g_debug("GritsPluginMap: _free_tile: %p", tile->data);
 	if (tile->data)
 		g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
 }
 
 static gpointer _update_tiles(gpointer _map)
 {
-	g_debug("GisPluginMap: _update_tiles");
-	GisPluginMap *map = _map;
+	g_debug("GritsPluginMap: _update_tiles");
+	GritsPluginMap *map = _map;
 	if (!g_mutex_trylock(map->mutex))
 		return NULL;
-	GisPoint eye;
-	gis_viewer_get_location(map->viewer, &eye.lat, &eye.lon, &eye.elev);
-	gis_tile_update(map->tiles, &eye,
+	GritsPoint eye;
+	grits_viewer_get_location(map->viewer, &eye.lat, &eye.lon, &eye.elev);
+	grits_tile_update(map->tiles, &eye,
 			MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
 			_load_tile, map);
-	gis_tile_gc(map->tiles, time(NULL)-10,
+	grits_tile_gc(map->tiles, time(NULL)-10,
 			_free_tile, map);
 	g_mutex_unlock(map->mutex);
 	return NULL;
@@ -153,13 +153,13 @@ static gpointer _update_tiles(gpointer _map)
 /*************
  * Callbacks *
  *************/
-static void _on_location_changed(GisViewer *viewer,
-		gdouble lat, gdouble lon, gdouble elev, GisPluginMap *map)
+static void _on_location_changed(GritsViewer *viewer,
+		gdouble lat, gdouble lon, gdouble elev, GritsPluginMap *map)
 {
 	g_thread_create(_update_tiles, map, FALSE, NULL);
 }
 
-static gpointer _threaded_init(GisPluginMap *map)
+static gpointer _threaded_init(GritsPluginMap *map)
 {
 	_load_tile(map->tiles, map);
 	_update_tiles(map);
@@ -170,17 +170,17 @@ static gpointer _threaded_init(GisPluginMap *map)
  * Methods *
  ***********/
 /**
- * gis_plugin_map_new:
- * @viewer: the #GisViewer to use for drawing
+ * grits_plugin_map_new:
+ * @viewer: the #GritsViewer to use for drawing
  *
  * Create a new instance of the map plugin.
  *
- * Returns: the new #GisPluginMap
+ * Returns: the new #GritsPluginMap
  */
-GisPluginMap *gis_plugin_map_new(GisViewer *viewer)
+GritsPluginMap *grits_plugin_map_new(GritsViewer *viewer)
 {
-	g_debug("GisPluginMap: new");
-	GisPluginMap *map = g_object_new(GIS_TYPE_PLUGIN_MAP, NULL);
+	g_debug("GritsPluginMap: new");
+	GritsPluginMap *map = g_object_new(GRITS_TYPE_PLUGIN_MAP, NULL);
 	map->viewer = g_object_ref(viewer);
 
 	/* Load initial tiles */
@@ -191,7 +191,7 @@ GisPluginMap *gis_plugin_map_new(GisViewer *viewer)
 			G_CALLBACK(_on_location_changed), map);
 
 	/* Add renderers */
-	gis_viewer_add(viewer, GIS_OBJECT(map->tiles), GIS_LEVEL_OVERLAY-1, 0);
+	grits_viewer_add(viewer, GRITS_OBJECT(map->tiles), GRITS_LEVEL_OVERLAY-1, 0);
 
 	return map;
 }
@@ -201,53 +201,53 @@ GisPluginMap *gis_plugin_map_new(GisViewer *viewer)
  * GObject code *
  ****************/
 /* Plugin init */
-static void gis_plugin_map_plugin_init(GisPluginInterface *iface);
-G_DEFINE_TYPE_WITH_CODE(GisPluginMap, gis_plugin_map, G_TYPE_OBJECT,
-		G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
-			gis_plugin_map_plugin_init));
-static void gis_plugin_map_plugin_init(GisPluginInterface *iface)
+static void grits_plugin_map_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginMap, grits_plugin_map, G_TYPE_OBJECT,
+		G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+			grits_plugin_map_plugin_init));
+static void grits_plugin_map_plugin_init(GritsPluginInterface *iface)
 {
-	g_debug("GisPluginMap: plugin_init");
+	g_debug("GritsPluginMap: plugin_init");
 	/* Add methods to the interface */
 }
 /* Class/Object init */
-static void gis_plugin_map_init(GisPluginMap *map)
+static void grits_plugin_map_init(GritsPluginMap *map)
 {
-	g_debug("GisPluginMap: init");
+	g_debug("GritsPluginMap: init");
 	/* Set defaults */
-	map->mutex  = g_mutex_new();
-	map->tiles  = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
-	map->wms    = gis_wms_new(
+	map->mutex = g_mutex_new();
+	map->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+	map->wms   = grits_wms_new(
 		"http://labs.metacarta.com/wms/vmap0";, "basic", "image/png",
 		"osm/", "png", TILE_WIDTH, TILE_HEIGHT);
 }
-static void gis_plugin_map_dispose(GObject *gobject)
+static void grits_plugin_map_dispose(GObject *gobject)
 {
-	g_debug("GisPluginMap: dispose");
-	GisPluginMap *map = GIS_PLUGIN_MAP(gobject);
+	g_debug("GritsPluginMap: dispose");
+	GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
 	/* Drop references */
 	if (map->viewer) {
 		g_signal_handler_disconnect(map->viewer, map->sigid);
 		g_object_unref(map->viewer);
 		map->viewer = NULL;
 	}
-	G_OBJECT_CLASS(gis_plugin_map_parent_class)->dispose(gobject);
+	G_OBJECT_CLASS(grits_plugin_map_parent_class)->dispose(gobject);
 }
-static void gis_plugin_map_finalize(GObject *gobject)
+static void grits_plugin_map_finalize(GObject *gobject)
 {
-	g_debug("GisPluginMap: finalize");
-	GisPluginMap *map = GIS_PLUGIN_MAP(gobject);
+	g_debug("GritsPluginMap: finalize");
+	GritsPluginMap *map = GRITS_PLUGIN_MAP(gobject);
 	/* Free data */
-	gis_tile_free(map->tiles, _free_tile, map);
-	gis_wms_free(map->wms);
+	grits_tile_free(map->tiles, _free_tile, map);
+	grits_wms_free(map->wms);
 	g_mutex_free(map->mutex);
-	G_OBJECT_CLASS(gis_plugin_map_parent_class)->finalize(gobject);
+	G_OBJECT_CLASS(grits_plugin_map_parent_class)->finalize(gobject);
 
 }
-static void gis_plugin_map_class_init(GisPluginMapClass *klass)
+static void grits_plugin_map_class_init(GritsPluginMapClass *klass)
 {
-	g_debug("GisPluginMap: class_init");
+	g_debug("GritsPluginMap: class_init");
 	GObjectClass *gobject_class = (GObjectClass*)klass;
-	gobject_class->dispose  = gis_plugin_map_dispose;
-	gobject_class->finalize = gis_plugin_map_finalize;
+	gobject_class->dispose  = grits_plugin_map_dispose;
+	gobject_class->finalize = grits_plugin_map_finalize;
 }
diff --git a/src/plugins/map.h b/src/plugins/map.h
index 406fff9..91741e2 100644
--- a/src/plugins/map.h
+++ b/src/plugins/map.h
@@ -20,34 +20,34 @@
 
 #include <glib-object.h>
 
-#define GIS_TYPE_PLUGIN_MAP            (gis_plugin_map_get_type ())
-#define GIS_PLUGIN_MAP(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PLUGIN_MAP, GisPluginMap))
-#define GIS_IS_PLUGIN_MAP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PLUGIN_MAP))
-#define GIS_PLUGIN_MAP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PLUGIN_MAP, GisPluginMapClass))
-#define GIS_IS_PLUGIN_MAP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PLUGIN_MAP))
-#define GIS_PLUGIN_MAP_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PLUGIN_MAP, GisPluginMapClass))
+#define GRITS_TYPE_PLUGIN_MAP            (grits_plugin_map_get_type ())
+#define GRITS_PLUGIN_MAP(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PLUGIN_MAP, GritsPluginMap))
+#define GRITS_IS_PLUGIN_MAP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PLUGIN_MAP))
+#define GRITS_PLUGIN_MAP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PLUGIN_MAP, GritsPluginMapClass))
+#define GRITS_IS_PLUGIN_MAP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PLUGIN_MAP))
+#define GRITS_PLUGIN_MAP_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PLUGIN_MAP, GritsPluginMapClass))
 
-typedef struct _GisPluginMap      GisPluginMap;
-typedef struct _GisPluginMapClass GisPluginMapClass;
+typedef struct _GritsPluginMap      GritsPluginMap;
+typedef struct _GritsPluginMapClass GritsPluginMapClass;
 
-struct _GisPluginMap {
+struct _GritsPluginMap {
 	GObject parent_instance;
 
 	/* instance members */
-	GisViewer *viewer;
-	GisTile   *tiles;
-	GisWms    *wms;
-	GMutex    *mutex;
-	gulong     sigid;
+	GritsViewer *viewer;
+	GritsTile   *tiles;
+	GritsWms    *wms;
+	GMutex      *mutex;
+	gulong       sigid;
 };
 
-struct _GisPluginMapClass {
+struct _GritsPluginMapClass {
 	GObjectClass parent_class;
 };
 
-GType gis_plugin_map_get_type();
+GType grits_plugin_map_get_type();
 
 /* Methods */
-GisPluginMap *gis_plugin_map_new(GisViewer *viewer);
+GritsPluginMap *grits_plugin_map_new(GritsViewer *viewer);
 
 #endif
diff --git a/src/plugins/sat.c b/src/plugins/sat.c
index 3ae85b9..29a7d26 100644
--- a/src/plugins/sat.c
+++ b/src/plugins/sat.c
@@ -19,7 +19,7 @@
  * SECTION:sat
  * @short_description: Satellite plugin
  *
- * #GisPluginSat provides overlays using satellite imagery. This is mostly
+ * #GritsPluginSat provides overlays using satellite imagery. This is mostly
  * provided by NASA's Blue Marble Next Generation.
  */
 
@@ -37,23 +37,23 @@
 #define TILE_HEIGHT    512
 
 struct _LoadTileData {
-	GisPluginSat *sat;
-	GisTile      *tile;
-	gchar        *path;
+	GritsPluginSat *sat;
+	GritsTile      *tile;
+	gchar          *path;
 };
 static gboolean _load_tile_cb(gpointer _data)
 {
 	struct _LoadTileData *data = _data;
-	GisPluginSat *sat  = data->sat;
-	GisTile      *tile = data->tile;
-	gchar        *path = data->path;
+	GritsPluginSat *sat  = data->sat;
+	GritsTile      *tile = data->tile;
+	gchar          *path = data->path;
 	g_free(data);
 
 	/* Load pixbuf */
-	g_debug("GisPluginSat: _load_tile_cb start");
+	g_debug("GritsPluginSat: _load_tile_cb start");
 	GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
 	if (!pixbuf) {
-		g_warning("GisPluginSat: _load_tile - Error loading pixbuf %s", path);
+		g_warning("GritsPluginSat: _load_tile - Error loading pixbuf %s", path);
 		g_remove(path);
 		g_free(path);
 		return FALSE;
@@ -98,16 +98,16 @@ static gboolean _load_tile_cb(gpointer _data)
 	return FALSE;
 }
 
-static void _load_tile(GisTile *tile, gpointer _sat)
+static void _load_tile(GritsTile *tile, gpointer _sat)
 {
-	GisPluginSat *sat = _sat;
-	g_debug("GisPluginSat: _load_tile start %p", g_thread_self());
+	GritsPluginSat *sat = _sat;
+	g_debug("GritsPluginSat: _load_tile start %p", g_thread_self());
 	struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
 	data->sat  = sat;
 	data->tile = tile;
-	data->path = gis_wms_fetch(sat->wms, tile, GIS_ONCE, NULL, NULL);
+	data->path = grits_wms_fetch(sat->wms, tile, GRITS_ONCE, NULL, NULL);
 	g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
-	g_debug("GisPluginSat: _load_tile end %p", g_thread_self());
+	g_debug("GritsPluginSat: _load_tile end %p", g_thread_self());
 }
 
 static gboolean _free_tile_cb(gpointer data)
@@ -116,25 +116,25 @@ static gboolean _free_tile_cb(gpointer data)
 	g_free(data);
 	return FALSE;
 }
-static void _free_tile(GisTile *tile, gpointer _sat)
+static void _free_tile(GritsTile *tile, gpointer _sat)
 {
-	g_debug("GisPluginSat: _free_tile: %p", tile->data);
+	g_debug("GritsPluginSat: _free_tile: %p", tile->data);
 	if (tile->data)
 		g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
 }
 
 static gpointer _update_tiles(gpointer _sat)
 {
-	g_debug("GisPluginSat: _update_tiles");
-	GisPluginSat *sat = _sat;
+	g_debug("GritsPluginSat: _update_tiles");
+	GritsPluginSat *sat = _sat;
 	if (!g_mutex_trylock(sat->mutex))
 		return NULL;
-	GisPoint eye;
-	gis_viewer_get_location(sat->viewer, &eye.lat, &eye.lon, &eye.elev);
-	gis_tile_update(sat->tiles, &eye,
+	GritsPoint eye;
+	grits_viewer_get_location(sat->viewer, &eye.lat, &eye.lon, &eye.elev);
+	grits_tile_update(sat->tiles, &eye,
 			MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
 			_load_tile, sat);
-	gis_tile_gc(sat->tiles, time(NULL)-10,
+	grits_tile_gc(sat->tiles, time(NULL)-10,
 			_free_tile, sat);
 	g_mutex_unlock(sat->mutex);
 	return NULL;
@@ -143,13 +143,13 @@ static gpointer _update_tiles(gpointer _sat)
 /*************
  * Callbacks *
  *************/
-static void _on_location_changed(GisViewer *viewer,
-		gdouble lat, gdouble lon, gdouble elev, GisPluginSat *sat)
+static void _on_location_changed(GritsViewer *viewer,
+		gdouble lat, gdouble lon, gdouble elev, GritsPluginSat *sat)
 {
 	g_thread_create(_update_tiles, sat, FALSE, NULL);
 }
 
-static gpointer _threaded_init(GisPluginSat *sat)
+static gpointer _threaded_init(GritsPluginSat *sat)
 {
 	_load_tile(sat->tiles, sat);
 	_update_tiles(sat);
@@ -160,17 +160,17 @@ static gpointer _threaded_init(GisPluginSat *sat)
  * Methods *
  ***********/
 /**
- * gis_plugin_sat_new:
- * @viewer: the #GisViewer to use for drawing
+ * grits_plugin_sat_new:
+ * @viewer: the #GritsViewer to use for drawing
  *
  * Create a new instance of the satellite plugin.
  *
- * Returns: the new #GisPluginSat
+ * Returns: the new #GritsPluginSat
  */
-GisPluginSat *gis_plugin_sat_new(GisViewer *viewer)
+GritsPluginSat *grits_plugin_sat_new(GritsViewer *viewer)
 {
-	g_debug("GisPluginSat: new");
-	GisPluginSat *sat = g_object_new(GIS_TYPE_PLUGIN_SAT, NULL);
+	g_debug("GritsPluginSat: new");
+	GritsPluginSat *sat = g_object_new(GRITS_TYPE_PLUGIN_SAT, NULL);
 	sat->viewer = g_object_ref(viewer);
 
 	/* Load initial tiles */
@@ -181,7 +181,7 @@ GisPluginSat *gis_plugin_sat_new(GisViewer *viewer)
 			G_CALLBACK(_on_location_changed), sat);
 
 	/* Add renderers */
-	gis_viewer_add(viewer, GIS_OBJECT(sat->tiles), GIS_LEVEL_WORLD, FALSE);
+	grits_viewer_add(viewer, GRITS_OBJECT(sat->tiles), GRITS_LEVEL_WORLD, FALSE);
 
 	return sat;
 }
@@ -191,53 +191,53 @@ GisPluginSat *gis_plugin_sat_new(GisViewer *viewer)
  * GObject code *
  ****************/
 /* Plugin init */
-static void gis_plugin_sat_plugin_init(GisPluginInterface *iface);
-G_DEFINE_TYPE_WITH_CODE(GisPluginSat, gis_plugin_sat, G_TYPE_OBJECT,
-		G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
-			gis_plugin_sat_plugin_init));
-static void gis_plugin_sat_plugin_init(GisPluginInterface *iface)
+static void grits_plugin_sat_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginSat, grits_plugin_sat, G_TYPE_OBJECT,
+		G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+			grits_plugin_sat_plugin_init));
+static void grits_plugin_sat_plugin_init(GritsPluginInterface *iface)
 {
-	g_debug("GisPluginSat: plugin_init");
+	g_debug("GritsPluginSat: plugin_init");
 	/* Add methods to the interface */
 }
 /* Class/Object init */
-static void gis_plugin_sat_init(GisPluginSat *sat)
+static void grits_plugin_sat_init(GritsPluginSat *sat)
 {
-	g_debug("GisPluginSat: init");
+	g_debug("GritsPluginSat: init");
 	/* Set defaults */
 	sat->mutex = g_mutex_new();
-	sat->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
-	sat->wms   = gis_wms_new(
+	sat->tiles = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+	sat->wms   = grits_wms_new(
 		"http://www.nasa.network.com/wms";, "bmng200406", "image/jpeg",
 		"bmng/", "jpg", TILE_WIDTH, TILE_HEIGHT);
 }
-static void gis_plugin_sat_dispose(GObject *gobject)
+static void grits_plugin_sat_dispose(GObject *gobject)
 {
-	g_debug("GisPluginSat: dispose");
-	GisPluginSat *sat = GIS_PLUGIN_SAT(gobject);
+	g_debug("GritsPluginSat: dispose");
+	GritsPluginSat *sat = GRITS_PLUGIN_SAT(gobject);
 	/* Drop references */
 	if (sat->viewer) {
 		g_signal_handler_disconnect(sat->viewer, sat->sigid);
 		g_object_unref(sat->viewer);
 		sat->viewer = NULL;
 	}
-	G_OBJECT_CLASS(gis_plugin_sat_parent_class)->dispose(gobject);
+	G_OBJECT_CLASS(grits_plugin_sat_parent_class)->dispose(gobject);
 }
-static void gis_plugin_sat_finalize(GObject *gobject)
+static void grits_plugin_sat_finalize(GObject *gobject)
 {
-	g_debug("GisPluginSat: finalize");
-	GisPluginSat *sat = GIS_PLUGIN_SAT(gobject);
+	g_debug("GritsPluginSat: finalize");
+	GritsPluginSat *sat = GRITS_PLUGIN_SAT(gobject);
 	/* Free data */
-	gis_tile_free(sat->tiles, _free_tile, sat);
-	gis_wms_free(sat->wms);
+	grits_tile_free(sat->tiles, _free_tile, sat);
+	grits_wms_free(sat->wms);
 	g_mutex_free(sat->mutex);
-	G_OBJECT_CLASS(gis_plugin_sat_parent_class)->finalize(gobject);
+	G_OBJECT_CLASS(grits_plugin_sat_parent_class)->finalize(gobject);
 
 }
-static void gis_plugin_sat_class_init(GisPluginSatClass *klass)
+static void grits_plugin_sat_class_init(GritsPluginSatClass *klass)
 {
-	g_debug("GisPluginSat: class_init");
+	g_debug("GritsPluginSat: class_init");
 	GObjectClass *gobject_class = (GObjectClass*)klass;
-	gobject_class->dispose  = gis_plugin_sat_dispose;
-	gobject_class->finalize = gis_plugin_sat_finalize;
+	gobject_class->dispose  = grits_plugin_sat_dispose;
+	gobject_class->finalize = grits_plugin_sat_finalize;
 }
diff --git a/src/plugins/sat.h b/src/plugins/sat.h
index 9669fe0..b871741 100644
--- a/src/plugins/sat.h
+++ b/src/plugins/sat.h
@@ -20,34 +20,34 @@
 
 #include <glib-object.h>
 
-#define GIS_TYPE_PLUGIN_SAT            (gis_plugin_sat_get_type ())
-#define GIS_PLUGIN_SAT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PLUGIN_SAT, GisPluginSat))
-#define GIS_IS_PLUGIN_SAT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PLUGIN_SAT))
-#define GIS_PLUGIN_SAT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PLUGIN_SAT, GisPluginSatClass))
-#define GIS_IS_PLUGIN_SAT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PLUGIN_SAT))
-#define GIS_PLUGIN_SAT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PLUGIN_SAT, GisPluginSatClass))
+#define GRITS_TYPE_PLUGIN_SAT            (grits_plugin_sat_get_type ())
+#define GRITS_PLUGIN_SAT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PLUGIN_SAT, GritsPluginSat))
+#define GRITS_IS_PLUGIN_SAT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PLUGIN_SAT))
+#define GRITS_PLUGIN_SAT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PLUGIN_SAT, GritsPluginSatClass))
+#define GRITS_IS_PLUGIN_SAT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PLUGIN_SAT))
+#define GRITS_PLUGIN_SAT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PLUGIN_SAT, GritsPluginSatClass))
 
-typedef struct _GisPluginSat      GisPluginSat;
-typedef struct _GisPluginSatClass GisPluginSatClass;
+typedef struct _GritsPluginSat      GritsPluginSat;
+typedef struct _GritsPluginSatClass GritsPluginSatClass;
 
-struct _GisPluginSat {
+struct _GritsPluginSat {
 	GObject parent_instance;
 
 	/* instance members */
-	GisViewer *viewer;
-	GisTile   *tiles;
-	GisWms    *wms;
-	GMutex    *mutex;
-	gulong     sigid;
+	GritsViewer *viewer;
+	GritsTile   *tiles;
+	GritsWms    *wms;
+	GMutex      *mutex;
+	gulong       sigid;
 };
 
-struct _GisPluginSatClass {
+struct _GritsPluginSatClass {
 	GObjectClass parent_class;
 };
 
-GType gis_plugin_sat_get_type();
+GType grits_plugin_sat_get_type();
 
 /* Methods */
-GisPluginSat *gis_plugin_sat_new(GisViewer *viewer);
+GritsPluginSat *grits_plugin_sat_new(GritsViewer *viewer);
 
 #endif
diff --git a/src/plugins/test.c b/src/plugins/test.c
index f42f02c..609297c 100644
--- a/src/plugins/test.c
+++ b/src/plugins/test.c
@@ -19,7 +19,7 @@
  * SECTION:test
  * @short_description: Testing plugin
  *
- * #GisPluginTest is a testing plugin used during development and as an example
+ * #GritsPluginTest is a testing plugin used during development and as an example
  * for how to create a plugin.
  */
 
@@ -36,25 +36,25 @@
  ***********/
 gboolean _load_marker(gpointer _test)
 {
-	GisPluginTest *test = _test;
-	GisMarker *marker = gis_marker_new("St. Charles");
-	gis_point_set_lle(gis_object_center(marker), 38.841847, -90.491982, 0);
-	GIS_OBJECT(marker)->lod = EARTH_R;
-	test->marker = gis_viewer_add(test->viewer, GIS_OBJECT(marker), GIS_LEVEL_OVERLAY, 0);
+	GritsPluginTest *test = _test;
+	GritsMarker *marker = grits_marker_new("St. Charles");
+	grits_point_set_lle(grits_object_center(marker), 38.841847, -90.491982, 0);
+	GRITS_OBJECT(marker)->lod = EARTH_R;
+	test->marker = grits_viewer_add(test->viewer, GRITS_OBJECT(marker), GRITS_LEVEL_OVERLAY, 0);
 	return FALSE;
 }
 /**
- * gis_plugin_test_new:
- * @viewer: the #GisViewer to use for drawing
+ * grits_plugin_test_new:
+ * @viewer: the #GritsViewer to use for drawing
  *
  * Create a new instance of the testing plugin.
  *
- * Returns: the new #GisPluginTest
+ * Returns: the new #GritsPluginTest
  */
-GisPluginTest *gis_plugin_test_new(GisViewer *viewer)
+GritsPluginTest *grits_plugin_test_new(GritsViewer *viewer)
 {
-	g_debug("GisPluginTest: new");
-	GisPluginTest *test = g_object_new(GIS_TYPE_PLUGIN_TEST, NULL);
+	g_debug("GritsPluginTest: new");
+	GritsPluginTest *test = g_object_new(GRITS_TYPE_PLUGIN_TEST, NULL);
 	test->viewer = g_object_ref(viewer);
 	g_idle_add(_load_marker, test);
 	return test;
@@ -65,34 +65,34 @@ GisPluginTest *gis_plugin_test_new(GisViewer *viewer)
  * GObject code *
  ****************/
 /* Plugin init */
-static void gis_plugin_test_plugin_init(GisPluginInterface *iface);
-G_DEFINE_TYPE_WITH_CODE(GisPluginTest, gis_plugin_test, G_TYPE_OBJECT,
-		G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
-			gis_plugin_test_plugin_init));
-static void gis_plugin_test_plugin_init(GisPluginInterface *iface)
+static void grits_plugin_test_plugin_init(GritsPluginInterface *iface);
+G_DEFINE_TYPE_WITH_CODE(GritsPluginTest, grits_plugin_test, G_TYPE_OBJECT,
+		G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
+			grits_plugin_test_plugin_init));
+static void grits_plugin_test_plugin_init(GritsPluginInterface *iface)
 {
-	g_debug("GisPluginTest: plugin_init");
+	g_debug("GritsPluginTest: plugin_init");
 	/* Add methods to the interface */
 }
 /* Class/Object init */
-static void gis_plugin_test_init(GisPluginTest *test)
+static void grits_plugin_test_init(GritsPluginTest *test)
 {
-	g_debug("GisPluginTest: init");
+	g_debug("GritsPluginTest: init");
 }
-static void gis_plugin_test_dispose(GObject *_test)
+static void grits_plugin_test_dispose(GObject *_test)
 {
-	g_debug("GisPluginTest: dispose");
-	GisPluginTest *test = GIS_PLUGIN_TEST(_test);
+	g_debug("GritsPluginTest: dispose");
+	GritsPluginTest *test = GRITS_PLUGIN_TEST(_test);
 	if (test->viewer) {
-		gis_viewer_remove(test->viewer, test->marker);
+		grits_viewer_remove(test->viewer, test->marker);
 		g_object_unref(test->viewer);
 		test->viewer = NULL;
 	}
-	G_OBJECT_CLASS(gis_plugin_test_parent_class)->finalize(_test);
+	G_OBJECT_CLASS(grits_plugin_test_parent_class)->finalize(_test);
 }
-static void gis_plugin_test_class_init(GisPluginTestClass *klass)
+static void grits_plugin_test_class_init(GritsPluginTestClass *klass)
 {
-	g_debug("GisPluginTest: class_init");
+	g_debug("GritsPluginTest: class_init");
 	GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
-	gobject_class->dispose = gis_plugin_test_dispose;
+	gobject_class->dispose = grits_plugin_test_dispose;
 }
diff --git a/src/plugins/test.h b/src/plugins/test.h
index 623454a..f1b7924 100644
--- a/src/plugins/test.h
+++ b/src/plugins/test.h
@@ -20,31 +20,31 @@
 
 #include <glib-object.h>
 
-#define GIS_TYPE_PLUGIN_TEST            (gis_plugin_test_get_type ())
-#define GIS_PLUGIN_TEST(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GIS_TYPE_PLUGIN_TEST, GisPluginTest))
-#define GIS_IS_PLUGIN_TEST(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GIS_TYPE_PLUGIN_TEST))
-#define GIS_PLUGIN_TEST_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GIS_TYPE_PLUGIN_TEST, GisPluginTestClass))
-#define GIS_IS_PLUGIN_TEST_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GIS_TYPE_PLUGIN_TEST))
-#define GIS_PLUGIN_TEST_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GIS_TYPE_PLUGIN_TEST, GisPluginTestClass))
+#define GRITS_TYPE_PLUGIN_TEST            (grits_plugin_test_get_type ())
+#define GRITS_PLUGIN_TEST(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),   GRITS_TYPE_PLUGIN_TEST, GritsPluginTest))
+#define GRITS_IS_PLUGIN_TEST(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),   GRITS_TYPE_PLUGIN_TEST))
+#define GRITS_PLUGIN_TEST_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST   ((klass), GRITS_TYPE_PLUGIN_TEST, GritsPluginTestClass))
+#define GRITS_IS_PLUGIN_TEST_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE   ((klass), GRITS_TYPE_PLUGIN_TEST))
+#define GRITS_PLUGIN_TEST_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),   GRITS_TYPE_PLUGIN_TEST, GritsPluginTestClass))
 
-typedef struct _GisPluginTest      GisPluginTest;
-typedef struct _GisPluginTestClass GisPluginTestClass;
+typedef struct _GritsPluginTest      GritsPluginTest;
+typedef struct _GritsPluginTestClass GritsPluginTestClass;
 
-struct _GisPluginTest {
+struct _GritsPluginTest {
 	GObject parent_instance;
 
 	/* instance members */
-	GisViewer *viewer;
-	gpointer   marker;
+	GritsViewer *viewer;
+	gpointer     marker;
 };
 
-struct _GisPluginTestClass {
+struct _GritsPluginTestClass {
 	GObjectClass parent_class;
 };
 
-GType gis_plugin_test_get_type();
+GType grits_plugin_test_get_type();
 
 /* Methods */
-GisPluginTest *gis_plugin_test_new(GisViewer *viewer);
+GritsPluginTest *grits_plugin_test_new(GritsViewer *viewer);
 
 #endif
diff --git a/src/roam.c b/src/roam.c
index aca55a3..768ca35 100644
--- a/src/roam.c
+++ b/src/roam.c
@@ -21,8 +21,8 @@
  *
  * A spherical version of the Realtime Optimally-Adapting Meshes (ROAM)
  * algorithm is use for drawing the surface of the planet. ROAM provide a
- * continuous level-of-detail mesh of the planet which is used by #GisOpenGL
- * when drawing surface textures for GisTiles.
+ * continuous level-of-detail mesh of the planet which is used by #GritsOpenGL
+ * when drawing surface textures for GritsTiles.
  *
  * This implementation of the ROAM algorithm is based on an octahedron as the
  * base model.
diff --git a/src/roam.h b/src/roam.h
index aec4b21..7b9636d 100644
--- a/src/roam.h
+++ b/src/roam.h
@@ -32,7 +32,7 @@ typedef struct _RoamSphere   RoamSphere;
  * @lon:       the longitude
  * @user_data: user data passed to the function
  *
- * See #GisHeightFunc
+ * See #GritsHeightFunc
  *
  * Returns: the elevation
  */
diff --git a/src/tile-test.c b/src/tile-test.c
index edaabe6..a800b9c 100644
--- a/src/tile-test.c
+++ b/src/tile-test.c
@@ -50,15 +50,15 @@ gpointer do_bmng_cache(gpointer _image)
 {
 	GtkImage *image = _image;
 	g_message("Creating bmng tile");
-	GisTile *tile = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
-	tile->children[0][1] = gis_tile_new(tile, NORTH, 0, 0, WEST);
+	GritsTile *tile = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+	tile->children[0][1] = grits_tile_new(tile, NORTH, 0, 0, WEST);
 	tile = tile->children[0][1];
 
 	g_message("Fetching bmng image");
-	GisWms *bmng_wms = gis_wms_new(
+	GritsWms *bmng_wms = grits_wms_new(
 		"http://www.nasa.network.com/wms";, "bmng200406", "image/jpeg",
 		"bmng_test/", "jpg", 512, 256);
-	const char *path = gis_wms_fetch(bmng_wms, tile, GIS_ONCE, NULL, NULL);
+	const char *path = grits_wms_fetch(bmng_wms, tile, GRITS_ONCE, NULL, NULL);
 
 	g_message("Loading bmng image: [%s]", path);
 	GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
@@ -67,8 +67,8 @@ gpointer do_bmng_cache(gpointer _image)
 	gdk_threads_leave();
 
 	g_message("Cleaning bmng up");
-	gis_wms_free(bmng_wms);
-	gis_tile_free(tile, NULL, NULL);
+	grits_wms_free(bmng_wms);
+	grits_tile_free(tile, NULL, NULL);
 	return NULL;
 }
 
@@ -76,15 +76,15 @@ gpointer do_osm_cache(gpointer _image)
 {
 	GtkImage *image = _image;
 	g_message("Creating osm tile");
-	GisTile *tile = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
-	tile->children[0][1] = gis_tile_new(tile, NORTH, 0, 0, WEST);
+	GritsTile *tile = grits_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+	tile->children[0][1] = grits_tile_new(tile, NORTH, 0, 0, WEST);
 	tile = tile->children[0][1];
 
 	g_message("Fetching osm image");
-	GisWms *osm_wms = gis_wms_new(
+	GritsWms *osm_wms = grits_wms_new(
 		"http://labs.metacarta.com/wms/vmap0";, "basic", "image/png",
 		"osm_test/", "png", 512, 256);
-	const char *path = gis_wms_fetch(osm_wms, tile, GIS_ONCE, NULL, NULL);
+	const char *path = grits_wms_fetch(osm_wms, tile, GRITS_ONCE, NULL, NULL);
 
 	g_message("Loading osm image: [%s]", path);
 	GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
@@ -93,8 +93,8 @@ gpointer do_osm_cache(gpointer _image)
 	gdk_threads_leave();
 
 	g_message("Cleaning osm up");
-	gis_wms_free(osm_wms);
-	gis_tile_free(tile, NULL, NULL);
+	grits_wms_free(osm_wms);
+	grits_tile_free(tile, NULL, NULL);
 	return NULL;
 }
 



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