X11 :-
X11:-
X11R6.7.0 Documentations Link
XFree86[tm] v4.3.0 Documentation Link
X11R6 Xlib Manual in HTML Link
Xlib Manual Link
comp.windows.x FAQ Link
Motif :-
Motif Programming Link
Overview of Motif 2.0 Link
Open Motif Documentation Supplements Link
LessTif Home Page Link
Motif FAQ Link
Open Motif FAQ Link