diff -r 1c57d8b38d5a -r 04e5449e25dc mercurial/commands.py
--- a/mercurial/commands.py	Fri Sep 30 14:09:45 2011 -0500
+++ b/mercurial/commands.py	Fri Sep 30 14:12:48 2011 -0500
@@ -1052,6 +1052,9 @@
     tag will include the tagged changeset but not the changeset
     containing the tag.
 
+    To check out a particular version, use -u/--update, or
+    -U/--noupdate to create a clone with no working directory.
+
     .. container:: verbose
 
       For efficiency, hardlinks are used for cloning whenever the