--- a/cygwin.rst	Tue Aug 03 12:08:32 2010 +0300
+++ b/cygwin.rst	Tue Aug 03 12:19:54 2010 +0300
@@ -62,7 +62,21 @@
 
   $ DISPLAY=:0 xterm&
 
-* Search for package.
+* Working with packages.
+
+** Installed package list with versions.
+
+  $ cygcheck -c -d
+
+** List of package files.
+
+  $ cygcheck -l pkg-name
+
+** Search package by file in installed packages.
+
+  $ cygcheck -f full-path-to-file
+
+** Search for package.
 
 If you have file name or regex use (need internet connection):