[GRASS-SVN] r34275 - grass/trunk/vector/v.category

[svn_grass at osgeo.org]

Author: epatton
Date: 2008-11-13 11:29:38 -0500 (Thu, 13 Nov 2008)
New Revision: 34275

Modified:
   grass/trunk/vector/v.category/v.category.html
Log:
Added notes about ID parameter

Modified: grass/trunk/vector/v.category/v.category.html
===================================================================
--- grass/trunk/vector/v.category/v.category.html	2008-11-13 14:43:35 UTC (rev 34274)
+++ grass/trunk/vector/v.category/v.category.html	2008-11-13 16:29:38 UTC (rev 34275)
@@ -2,7 +2,7 @@
 
 <em>v.category</em> attaches, deletes or reports vector categories to
 map geometry. These categories (IDs) are used to link geometry
-object(s) to attribute record (from attribute table linked to vector map).
+object(s) to attribute records (from attribute table linked to vector map).
 
 <h2>NOTES</h2>
 
@@ -28,7 +28,11 @@
 
 <p>
 The <b>id</b> parameter specifies the list of feature ids to which the
-operation is performed. By default all vector features are processed.
+operation is performed; by default, all vector feature ids are processed. 
+The <b>id</b> is an internal (unique) geometry id that all vector primitives possess, 
+and is separate from any category the feature may also possess. 
+Use <div class="code"><pre><em><a href="v.edit.html">v.edit</a></em> map=inputname tool=select</pre></div>
+to find out the geometry ids of certain features.
 
 <h2>EXAMPLES</h2>