The articles in this collection were originally printed in The Computer Journal, and are reproduced with the permission of the publisher. These are copyrighted works which may be uploaded to bulletin boards, electronically transmitted and reproduced with proper credit given to the publisher and respective authors. We wish to thank Art Carlson, past publisher and editor of The Computer Journal, for his generosity in allowing the Z-System Software Update Service to offer you these articles. We further wish to thank the authors for their fine work. You should find hours of enjoyable and productive reading in the text files in this collection. As of 1 January, 1991, The Computer Journal changed hands. Chris McEwen, one of the Z-SUS partners, has assumed the position of editor and publisher from Art Carlson. He assures all that TCJ's traditional CP/M and Z-System support will continue. If you find these articles of value to you, then you should certainly subscribe to The Computer Journal. Published six times per year, it remains the CP/M and Z-System world's finest publication. A subscription costs $18 per year within the US, and $24 for all other countries (surface shipment). The Computer Journal Socrates Press P.O. Box 12 S. Plainfield, NJ 07080-0012 United States (908) 755-6186 Z-System Software Update Service