diff --git a/hgext/hgk.py b/hgext/hgk.py
--- a/hgext/hgk.py
+++ b/hgext/hgk.py
@@ -7,31 +7,31 @@
 
 '''browse the repository in a graphical way
 
-The hgk extension allows browsing the history of a repository in a
-graphical way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not
-distributed with Mercurial.)
+The hgk extension allows browsing the history of a repository in a graphical
+way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not distributed with
+Mercurial.)
 
-hgk consists of two parts: a Tcl script that does the displaying and
-querying of information, and an extension to Mercurial named hgk.py,
-which provides hooks for hgk to get information. hgk can be found in
-the contrib directory, and the extension is shipped in the hgext
-repository, and needs to be enabled.
+hgk consists of two parts: a Tcl script that does the displaying and querying
+of information, and an extension to Mercurial named hgk.py, which provides
+hooks for hgk to get information. hgk can be found in the contrib directory,
+and the extension is shipped in the hgext repository, and needs to be enabled.
 
-The hg view command will launch the hgk Tcl script. For this command
-to work, hgk must be in your search path. Alternately, you can specify
-the path to hgk in your .hgrc file:
+The hg view command will launch the hgk Tcl script. For this command to work,
+hgk must be in your search path. Alternately, you can specify the path to hgk
+in your .hgrc file:
 
   [hgk]
   path=/location/of/hgk
 
-hgk can make use of the extdiff extension to visualize revisions.
-Assuming you had already configured extdiff vdiff command, just add:
+hgk can make use of the extdiff extension to visualize revisions. Assuming you
+had already configured extdiff vdiff command, just add:
 
   [hgk]
   vdiff=vdiff
 
-Revisions context menu will now display additional entries to fire
-vdiff on hovered and selected revisions.'''
+Revisions context menu will now display additional entries to fire vdiff on
+hovered and selected revisions.
+'''
 
 import os
 from mercurial import commands, util, patch, revlog, cmdutil