[gegl] docs: update glossary.adoc

[Øyvind "pippin" Kolås <ok src gnome org>]

commit df71f19015d853c3267554811e4e81d493d1b8ff
Author: John <jtm home gmail com>
Date:   Mon Feb 15 19:01:58 2021 +0000

    docs: update glossary.adoc

 docs/gegl-chain.adoc |  2 +-
 docs/glossary.adoc   | 48 ++++++++++++++++++++++++++++++++++--------------
 2 files changed, 35 insertions(+), 15 deletions(-)
---
diff --git a/docs/gegl-chain.adoc b/docs/gegl-chain.adoc
index 64328e21d..09af0086e 100644
--- a/docs/gegl-chain.adoc
+++ b/docs/gegl-chain.adoc
@@ -7,7 +7,7 @@ gegl operation chains
 A serialization format for GEGL link:glossary.html#graph[graphs] that grew out
 of the desire to write one-line image processing tasks on the command-line.
 
-examples
+Examples
 ^^^^^^^^
 
 Everything after `--` in a GEGL command-line that contains an input image is
diff --git a/docs/glossary.adoc b/docs/glossary.adoc
index e74eca1a6..072dd7337 100644
--- a/docs/glossary.adoc
+++ b/docs/glossary.adoc
@@ -1,32 +1,52 @@
 GEGL Glossary
 -------------
 
+[[connection]]
 connection::
-    A link/pipe routing image flow between operations within the graph goes
-    from an output pad to an input pad, in graph glossary this might also be
-    referred to as an edge.
+    A link/pipe routing image flow between operations within the graph
+    goes from an output xref:pad[pad] to an input xref:pad[pad], in
+    graph glossary this might also be referred to as an edge.
+
+[[DAG]]
 DAG::
-    Directed Acyclic Graph, see graph.
+    Directed Acyclic Graph, see xref:graph[graph].
+
+[[graph]]
 graph::
-    A composition of nodes, the graph is a DAG.
+    A composition of xref:node[nodes], the graph is a xref:DAG[DAG].
+
+[[node]]
 node::
-    The nodes are connected in the graph. A node has an associated operation or
-    can be constructed graph.
+    The nodes are connected in the xref:graph[graph]. A node has an
+    associated operation or can be constructed graph.
+
+[[operation]]
 operation::
-    The processing primitive of GEGL, is where the actual image processing
-    takes place. Operations are plug-ins and provide the actual functionality
-    of GEGL
+    The processing primitive of GEGL, is where the actual image
+    processing takes place. Operations are plug-ins and provide the
+    actual functionality of GEGL.
+
+[[pad]]
 pad::
-    The part of a node that exchanges image content. The place where image
-    "pipes" are used to connect the various operations in the composition.
+    The part of a xref:node[node] that exchanges image content. The
+    place where image "pipes" are used to connect the various operations
+    in the composition.
+
+[[input_pad]]
 input pad::
   consumes image data, might also be seen as an image parameter to the
   operation.
+
+[[output_pad]]
 output pad::
   a place where data can be requested, multiple input pads can reference
-  the same output pad.
+  the same output xref:pad[pad].
+
+[[sampler]]
 sampler::
     A resampling strategy used for transformations and warps.
+
+[[property]]
 property::
-    Properties are what controls the behavior of operations. Through the use of
+    Properties control the behaviour of operations. Through the use of
     GParamSpecs properties they are self documenting via introspection.