libxtst6 2:1.1.0-2ubuntu0.1 (amd64 binary) in ubuntu lucid

 libXtst provides an X Window System client interface to the Record
 extension to the X protocol.
 .
 The Record extension allows X clients to synthesise input events, which
 is useful for automated testing.
 .
 More information about X.Org can be found at:
 <URL:http://www.X.org>
 <URL:http://xorg.freedesktop.org>
 <URL:http://lists.freedesktop.org/mailman/listinfo/xorg>
 .
 This module can be found at
 git://anongit.freedesktop.org/git/xorg/lib/libXtst