# HG changeset patch
# User Brendan Cully <brendan@kublai.com>
# Date 1189542239 25200
# Node ID c8efd19e248c1f9990a1b765720289715134677a
# Parent  5a65d870871dfa9b195a112cae66e7d7a06f55f4
Document pseudo-tags "null" and ".".

diff -r 5a65d870871d -r c8efd19e248c doc/hg.1.txt
--- a/doc/hg.1.txt	Mon Sep 10 23:34:33 2007 +0200
+++ b/doc/hg.1.txt	Tue Sep 11 13:23:59 2007 -0700
@@ -62,6 +62,14 @@
     The reserved name "tip" is a special tag that always identifies
     the most recent revision.
 
+    The reserved name "null" indicates the null revision. This is the
+    revision of an empty repository, and the parent of revision 0.
+
+    The reserved name "." indicates the working directory parent. If
+    no working directory is checked out, it is equivalent to null.
+    If an uncommitted merge is in progress, "." is the revision of
+    the first parent.
+
 SPECIFYING MULTIPLE REVISIONS
 -----------------------------