--- a/dup.rst	Wed Aug 24 00:16:20 2016 +0300
+++ b/dup.rst	Wed Aug 24 00:16:33 2016 +0300
@@ -43,8 +43,8 @@
   http://code.google.com/p/softenido/wiki/FindRepe
                 FindRepe home page
 
-fdupes.
-=======
+fdupes
+======
 ::
 
   $ sudo apt-get install fdupes
@@ -58,8 +58,8 @@
   http://packages.debian.org/search?keywords=fdupes
                 fdupes Debian package
 
-freedups.
----------
+freedups
+========
 
 Freedups searches through the directories you specify. When it finds two
 identical files, it hard links them together. Now the two or more files still
@@ -69,8 +69,8 @@
   http://www.stearns.org/freedups/
                 freedups home page
 
-dupmerge.
----------
+dupmerge
+========
 
 Dupmerge reads a list of files from standard input (eg., as produced by "find .
 -print") and looks for identical files. When it finds two or more identical
@@ -80,8 +80,8 @@
   https://sourceforge.net/projects/dupmerge/
                 dupmerge home page
 
-ssdeep.
--------
+ssdeep
+======
 
 ssdeep is a program for computing context triggered piecewise hashes (CTPH).
 Also called fuzzy hashes, CTPH can match inputs that have homologies. Such
@@ -91,3 +91,10 @@
   http://ssdeep.sourceforge.net/
                 ssdeep home page
 
+comparator
+==========
+
+Available under Cygwin. Find duplication in source files::
+
+  $ comparator -s 5 $dir1 $dir2
+