--- a/test-onsub.t	Tue Mar 06 14:32:08 2012 +0100
+++ b/test-onsub.t	Tue Mar 06 14:36:55 2012 +0100
@@ -6,7 +6,7 @@
 Check help formatting:
 
   $ hg help onsub
-  hg onsub [-b] [-0] [--ignore-errors] CMD
+  hg onsub [-b] [-0] [--ignore-errors] CMD [POST-CMD]
   
   execute a command in each subrepository
   
@@ -14,6 +14,13 @@
       subrepository. By default, execution stops if CMD returns a non-zero exit
       code. Use --ignore-errors to override this.
   
+      If a POST-CMD is specified, this will be executed after all
+      subrepositories below the current subrepository has been visited. This
+      corresponds to a post-order traversal of the tree.
+  
+      It is an error to specify a POST-CMD together with the --breadth-first
+      flag.
+  
       Use --verbose/-v to print the command being run and the subrepo name for
       each run of CMD in a subrepo. Alternately, use --print0/-0 to print just
       the subrepo name followed by a NUL character instead of a newline. This