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XLIB Programming Manual, Rel. 5, Third Edition
Xlib Reference Manual for Version 11 of the X Window System
Xlib Reference Manual for Version 11 Volume 2, 5th Editon
X Toolkit Intrinsics Programming Manual: OSF/Motif 1.1 Edition for X11, Release 4
X Toolkit Intrinsics Programming Manual for Version 11 Volume 4, 3rd Edition
X Toolkit Intrinsics Programming Manual for Version 11 Volume 4, 2nd Edition
Adrian Nye is the author or editor of several volumes in the X Window System Series from O'Reilly Media, Inc.. He is currently a python developer at Dimensional Fund Advisors, working primarily on web applications.