document https://trac.osgeo.org/grass/changeset/54264

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@54278 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/init/variables.html

@@ -208,7 +208,14 @@ PERMANENT
   <!-- HB Sept 2005: I don't think this exists anymore:
        <p>GRASS_STDERR
 	 <br>&nbsp; set to any value to prevent user mail on error
-	 -->
+  -->
+
+  <dt>GRASS_SKIP_MAPSET_OWNER_CHECK</dt>
+  <dd>By default it is not possible to work with MAPSETs that are
+    not owned by current user. Setting this variable to any non-empty value
+    allows the check to be skipped.</dd>
+
+
   <dt>GRASS_SH</dt>
   <dd>[shell scripts on Windows]<br>
     path to bourne shell interpreter used to run shell scripts.</dd>