X font server
xfs is a daemon that listens on a network port and serves X fonts to X
servers (and thus to X clients). All X servers have the ability to serve
locally installed fonts for themselves, but xfs makes it possible to offload
that job from the X server, and/or have a central repository of fonts on a
networked machine running xfs so that all the machines running X servers on a
network do not require their own set of fonts. xfs may also be invoked by
users to, for instance, make available X fonts in user accounts that are not
available to the X server or to an already running system xfs.
