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Unix is a registered trademark of AT & T Corporation.

SPARC and SunOS are trademarks of Sun MicroSystems.

Apollo and Domain/OS are trademarks of Apollo.

IBM and AIX are \registered trademarks of International Business Machines Corporation.

RT and PS/2 are trademarks of International Business Machines Corporation.

HP, HP9000 and HP9000/300 are trademarks of Hewlett-Packard Company. HP-UX is Hewlett-Packard's implementation of the Unix operating system.

PostScript is a registered trademark of Adobe Systems Incorporated.