The HP widgets (Xw), described in the first edition of Doug Young's book (refs below). Xw.tar.gz works with X11R6. Apart from a lot of bugfixes (all the tests seem to work well now), a major change (courtesy Christos Zoulas) since older Xw is that the namespace of many atoms has been cleaned up (changed to XwN* from XtN*) and many types have been converted to Dimension and Position, consistent with Xt and Xaw. Regrettably, this means that a lot of clients that use this library will probably need to be fixed. The file young.examples.tar.Z contains the examples from Doug Young's book, to save typing. (They also contain some bugfixes, I believe) Young, Doug, "Programming with the X Toolkit (3 parts)," UNIX World, vol. 7, no. 1-3, January-March, 1990. This three part tutorial article is based on Young's books on the X Toolkit. Young, Douglas A., X Window Systems Programming and Applications With Xt, Prentice-Hall, 1989. ISBN 0-13-972167-3. An excellent (and currently the only) tutorial on programming with the X Toolkit intrinsics. Exam- ples in this book use the HP widgets, a Motif edition exists.