This book is for programmers who are familiar with Release 4 of the X Window System and want to know how to use the new features of Release 5. It is intended as an update for owners of Volumes 1, 2, 4, and 5 of the O'Reilly and Associates X Window System series, and provides complete tutorial and reference information on all new Xlib and Xt toolkit functions.It Together with Volume 2 and Volume 5, owners of the Programmer's Supplement for Release 5 have a complete set of reference pages for the current X Consortium standards for Xlib and Xt.