@begin(header)
author: Mark S. Ackerman
show_author: ShowNone
author_organization: MIT Center for Coordination Science
node_expert: ackerman=ag@ics.uci.edu
expiration_date: 12/31/93
last_modifier: ackerman=ag@ics.uci.edu
last_mod_date: 10/05/92
mod_num: 11
@end(header)
@b<Programming with X>

Are you having trouble with
@button(Xt toolkit in general,Prog_Xt)
@button(The Athena widget set,Prog_Athena)
@button(The Motif widget set,Prog_Motif)
@button(The Xlib level,Prog_Xlib)

