libxxf86vm1-dbg 1:1.0.1-2 (i386 binary) in ubuntu feisty

 libXxf86vm provides an interface to the XFree86-VidModeExtension
 extension, which allows client applications to get and set video mode
 timings in extensive detail. It is used by the xvidtune program in
 particular.
 .
 This package contains the debug versions of the library found in libxxf86vm1.
 Non-developers likely have little use for this package.
 .
 More information about X.Org can be found at:
 <URL:http://xorg.freedesktop.org>
 <URL:http://lists.freedesktop.org/mailman/listinfo/xorg>
 .
 This module can be found as the module 'lib/Xxf86vm' at
 :pserver:anoncvs@cvs.freedesktop.org:/cvs/xorg