A related document on WWW is ``What to do when Tk says that your display
http://ce-toolkit.crd.ge.com/tkxauth/. It was written by
Kevin Kenny. It suggests a similar solution to X authentication to that in
this document (xauth). However, Kevin aims more at using xdm to steer
xauth for you.
The X System Window System Vol. 8 ``X Window System Administrator's
O'Reilly and Associates has also been brought to my attention and confirmed as a
good source of information. However, it has not been revised since its
original publication in 1992. As such it only covers X11R4 and X11R5,
anything specific to X11R6 will not be covered.