X Window System User's Guide for X11 R3 and R4 of the X Window System

Copyright© 1990 0'Reilly & Associates, Inc.

All Rights Reserved

Ardent is a trademark ofStardent Computer Inc.
Charter is a registered trademark of Bitstream, Inc.
DEC is a registered trademark of Digital Equipment Corporation.
Gumby is a copyright of Prema Toy Company, Inc.
Lucida is a registered trademark of Bigelow & Holmes.
Macintosh is a registered trademark of Apple Computer, Inc.
MacWrite is a registered trademark ofCLARJS Corporation.
Motif, OSF, and OSF/Motif are trademarks of the Open Software Foundation, Inc.
NEWS is a trademark of the Sony Corporation.
NCDJ6 is a trademark of Network Computing Devices, Inc.
OPEN LOOK is a trademark of AT&T.
PostScript is a registered trademark of Adobe Systems Inc. Sun-3, Sun View, and Xll!NeWS are trademarks of Sun Microsystems, Inc.
Tektronix is a registered trademark ofTektronix Inc.
Tetris is a trademark of AcademySoft-EWRG.
Times, Helvetica, and New Century Schoolbook are registered trademarks of Linotype.
UNIX is a registered trademark of AT&T.
X Display Station is a trademark of Visual Technology Incorporated.
The X Window System is a trademark of the Massachusetts Institute ofTechnology.
The system.mwmrc file in Appendix C is reprinted with permission from
Open Software Foundation.

Printing and Revision History

Sept. 1988:	First Edition
July 1989:	Second Edition. Revised to reflect Release 3.
Oct. 1989:	Minor corrections.
May 1990:	Third Edition. Revised to reflect Release 4.

Small Print

Portions of this manual, especially the reference pages in Part Three, are based on reference materials provided on the X11 R4 tape, which are copyright © 1985, 1986, 1987, 1988, 1989, 1990 the Massachusetts Institute of Technology, Cambridge, Massachusetts, and Digital Equipment Corporation, Maynard, Massachusetts.

We’ve used this material under the terms of its copyright, which grants free use, subject to the following conditions:

“Permission to use, copy, modify and distribute this documentation (i.e., the original MIT and Digital material) for any purpose and without fee is hereby granted, provided that the above copyright notice appears in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of MIT or Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior pennission. MIT and Digital make no representations about the suitability of the software described herein for any purpose. It is provided ‘as is’ without expressed or implied warranty.”

Note, however, that those portions of this document that are based on the original XII documentation and other source material have been significantly revised, and that all such revisions are copyright © 1987, 1988, 1989, 1990 O’Reilly & Associates, Inc. Inasmuch as the proprietary revisions can’t be separated from the freely copyable MIT source material, the net result is that copying of this document is not allowed. Sorry for the doublespeak!

While every precaution has been taken in the preparation of this book, we assume no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein.

ISBN 0-937175-14-5

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