XFree86 is a added-value pack for X11R6 that supports several versions
of Intel-based Unix and Unix-like operating systems.  XFree86-3.0 was
part of the X11R6 core distribution.  This release XFree86-3.1 consists of
many new features and performance improvements as well as many bug fixes.
The release is available as source patches against the X Consortium X11R6
code, as well as binary distributions for many architectures.