[PATCH v3] backout: add examples to clarify basic usage

[Mathias De Maré]

# HG changeset patch
# User Mathias De Maré <mathias.demare at gmail.com>
# Date 1443764903 -7200
#      Fri Oct 02 07:48:23 2015 +0200
# Node ID 252a1af424ad7b440fecd18b5c187c4ac4c8df66
# Parent  61fbf5dc12b23e7a2a30cf04ebd9f096c42a1f61
backout: add examples to clarify basic usage

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -486,6 +486,23 @@
 
     .. container:: verbose
 
+      Examples:
+
+      - Reverse the effect of the parent of the working directory.
+        This backout will be committed immediately::
+
+        hg backout -r .
+
+      - Reverse the effect of previous bad revision 23::
+
+          hg backout -r 23
+          hg commit -m "Backout revision 23"
+
+      - Reverse the effect of previous bad revision 23 and
+        commit the backout immediately::
+
+          hg backout -r 23 --commit
+
       By default, the pending changeset will have one parent,
       maintaining a linear history. With --merge, the pending
       changeset will instead have two parents: the old parent of the