[GRASS-SVN] r72670 - grass/trunk/vector/v.extract

[svn_grass at osgeo.org]

Author: mmetz
Date: 2018-05-04 07:47:55 -0700 (Fri, 04 May 2018)
New Revision: 72670

Modified:
   grass/trunk/vector/v.extract/v.extract.html
Log:
v.extract: update manual, mention layer=-1

Modified: grass/trunk/vector/v.extract/v.extract.html
===================================================================
--- grass/trunk/vector/v.extract/v.extract.html	2018-05-03 20:08:30 UTC (rev 72669)
+++ grass/trunk/vector/v.extract/v.extract.html	2018-05-04 14:47:55 UTC (rev 72670)
@@ -14,10 +14,12 @@
 
 <h2>NOTES</h2>
 
-Only features with a category number will be extracted. So if you want to 
-extract boundaries (which are usually without category, as that information
-is normally held in the area's centroid) you must first use 
-<em><a href="v.category.html">v.category</a></em> to add them.
+Only features with a category number in the selected layer will be 
+extracted. So if you want to extract boundaries (which are usually 
+without category, as that information is normally held in the area's 
+centroid) you must first use 
+<em><a href="v.category.html">v.category</a></em> to add them, or use 
+<b>layer=-1</b>.
 
 <h2>EXAMPLES</h2>