Intel XENIX 286 Programmers Guide (86) - Tenox.tc

Introduction XENIX Programming
10. yacc: Compiler-Compiler: a program that produces a parser program that
translates input according to rules specified to yacc.
11. m4: Macro Processor: a program that processes macros defined and used in its
input, producing output with the macros replaced by the text that they stand for.
A. C Language Portability: how to write C language programs so that they are
portable to other XENIX systems running on other types of hardware.
B. Programming Commands: reference information for all the programming
commands in the XENIX 286 Extended System.
C. Related Publications: a list of related XENIX 286 manuals.
Notation
These notational conventions are used in this manual:
• Literal names are balded where they occur in text, e.g., /sys/include, printf,
dev_tab, EOF.
• Syntactic categories are italicized where they occur and indicate that you must
substitute an instance of the category, e.g., filename.
• In examples of dialogue with the XENIX 286 system, characters entered by the
user are balded.
• In syntax descriptions, optional items are enclosed in brackets ( [] ).
• Items that can be repeated one or more times are followed by an ellipsis ( ••• ).
• Items that can be repeated zero or more times are enclosed in brackets and
followed by an ellipsis ( [ ] ••• ).
• A choice between items is indicated by separating the items with vertical bars
( I ).
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