g.extension: more example in help page

	     module desc cosmetics


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49912 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/g.extension/g.extension.html

@@ -1,7 +1,7 @@
 <h2>DESCRIPTION</h2>
 
 <em>g.extension</em> downloads and installs, removes or updates
-extensions from GRASS Addons SVN repository into the local GRASS
+extensions from <a href="http://svn.osgeo.org/grass/grass-addons/grass7/">GRASS Addons SVN repository</a> into the local GRASS
 installation.
 
 <p>Re-running <em>g.extension</em> on an installed GRASS Addons
@@ -24,12 +24,27 @@ Remove locally installed extension
 g.extension extension=i.points.auto operation=remove
 </pre></div>
 
+List all available extensions from GRASS Addons SVN repository
+
+<div class="code"><pre>
+g.extension -l
+</pre></div>
+
+List all locally installed extensions
+
+<div class="code"><pre>
+g.extension -a
+</pre></div>
+
 <h2>SEE ALSO</h2>
 
 <em>
   <a href="g.extension.rebuild.all.html">g.extension.rebuild.all</a>
 </em>
 
+<p>
+See also <a href="http://grass.osgeo.org/wiki/GRASS_AddOns">GRASS Addons</a> wiki page.
+
 <h2>AUTHOR</h2>
 
 Markus Neteler<br>

scripts/g.extension/g.extension.py

@@ -18,7 +18,7 @@
 #############################################################################
 
 #%module
-#% label: Tool to maintain the extensions in local GRASS installation.
+#% label: Maintains GRASS Addons extensions in local GRASS installation.
 #% description: Downloads, installs extensions from GRASS Addons SVN repository into local GRASS installation or removes installed extensions.
 #% keywords: general
 #% keywords: installation