[gtk+] Mention key themes in the migration guide

[Matthias Clasen <matthiasc src gnome org>]

commit cfa6505504fab38107f40f42fcdc06f27f2c8439
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 30 23:53:19 2011 -0500

    Mention key themes in the migration guide

 docs/reference/gtk/migrating-GtkStyleContext.xml |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/gtk/migrating-GtkStyleContext.xml b/docs/reference/gtk/migrating-GtkStyleContext.xml
index e228a00..b2e73ed 100644
--- a/docs/reference/gtk/migrating-GtkStyleContext.xml
+++ b/docs/reference/gtk/migrating-GtkStyleContext.xml
@@ -29,11 +29,19 @@
     </para>
 
     <para>
-      If your theme gtkrc file was providing values for #GtkSettings, you
+      If your theme RC file was providing values for #GtkSettings, you
       can install a <filename>settings.ini</filename> keyfile along with
       the <filename>gtk.css</filename> to provide theme-specific defaults
       for settings.
     </para>
+
+    <para>
+      Key themes have been converted to CSS syntax too. See the
+      <link linkend="css-binding-set">GtkCssProvider</link> documentation
+      information about the syntax. GTK+ looks for key themes in the file
+      <filename>$datadir/themes/<replaceable>theme</replaceable>/gtk-3.0/gtk-keys.css</filename>, where <replaceable>theme</replaceable> is the current
+      key theme name.
+    </para>
   </section>
 
   <section id="gtk-migrating-theme-GtkStyleContext-engines">