This package includes"xextra"

-rwxr-xr-x-     root     root    2415860 Aug 05 00:35 /usr/X11R6/bin/Xnest
-rwxr-xr-x-     root     root    2923550 Aug 05 00:35 /usr/X11R6/bin/Xvfb

(c) S.u.S.E. - Last update: 18.08.98 09:06;