Rule of Composition: Design programs to be connected with other programs.Rule of Clarity: Clarity is better than cleverness.Rule of Modularity: Write simple parts connected by clean interfaces.The Lessons of Unix Can Be Applied Elsewhere.Cross-Platform Portability and Open Standards.2021-2048 and is reproduced with the permission of Bell Labs/Lucent Technologies. The epigraph on the Portability chapter is from the Bell System Technical Journal, v57 #6 part 2 (July-Aug. The photograph of Ken and Dennis in Chapter 2 appears courtesy of Bell Labs/Lucent Technologies. PDF and PostScript are trademarks of Adobe, Inc. Informix is a trademark of Informix software. SPARC is a trademark of SPARC international.
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