--- a/README.md	Wed Sep 07 10:40:18 2016 +0800
+++ b/README.md	Wed Sep 07 12:45:23 2016 +0200
@@ -6,10 +6,15 @@
 that it should "dissolve" upon being finished. This extension exists
 to be a sandbox for that experimentation.
 
-# usage
+# install
 
 Enable topics like any mercurial extension: download the source code to a
 local directory, and add that directory to your `.hgrc`:
 
     [extensions]
     topics=path/to/hg-topics/hgext3rd/topic/
+
+# help
+
+See 'hg help -e topic' for a generic help.
+See 'hg help topics' and 'hg help stack' for help on specific commands.