--- a/mercurial/help/config.txt	Thu Feb 16 16:40:29 2012 -0600
+++ b/mercurial/help/config.txt	Sun Jan 22 19:35:26 2012 +0700
@@ -534,6 +534,27 @@
     option ensures that the on-disk format of newly created
     repositories will be compatible with Mercurial before version 1.7.
 
+``graph``
+"""""""""
+
+This section specifies line width to visually distinguish 
+"main branch" or trunk in central repository graph.
+
+Format branch_name.attribute = value.
+
+Example::
+  [graph]
+  # 2px width
+  default.width = 2
+
+Supported arguments:
+
+``width``
+  Set width in px. Width is number 0-99.
+
+Known issues:
+  If line style doesn't change, try to clear browser cache.
+
 ``merge-patterns``
 """"""""""""""""""