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- WEB(1) USER COMMANDS WEB(1)
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- NAME
- tangle, weave - translate WEB to Pascal and/or TeX
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- SYNOPSIS
- tangle webfile[.web] [changefile[.ch]]
- weave [-x] webfile[.web] [changefile[.ch]]
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- DESCRIPTION
- The tangle program converts a WEB source document into a
- Pascal program that may be compiled in the usual way with
- the on-line Pascal compiler (e.g., pc(1)). The output file
- is all in lower case and packed into lines of 72 characters
- or less, with the only concession to readability being the
- termination of lines at semicolons when this can be done
- conveniently.
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- The WEB language allows you to prepare a single document
- containing all the information that is needed both to pro-
- duce a compilable Pascal program and to produce a well-
- formatted document describing the program in as much detail
- as the writer may desire. The user of WEB must be familiar
- with both TeX and Pascal. WEB also provides a relatively
- simple, although adequate, macro facility that permits a
- Pascal program to be written in small easily-understood
- modules.
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- The command line should have either one or two names on it.
- The first is taken as the WEB file (and .web is added if
- there is no extension). If there is another name, it is a
- change file (and .ch is added if there is no extension).
- The change file overrides parts of the WEB file, as
- described in the WEB system documentation.
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- The output files are a Pascal file and a string pool file,
- whose names are formed by adding .p and .pool respectively
- to the root of the WEB file name.
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- The weave program is used to create a TeX file for viewing
- the WEB program. It takes appropriate care of typographic
- details like page layout and the use of indentation, ital-
- ics, boldface, etc., and it supplies extensive cross-index
- information that it gathers automatically. The command line
- arguments are the same as for tangle except for the option:
- -x says to omit the index, module name list, and table of
- contents pages. (A CONTENTS.tex file will still be written
- when the TeX file is processed, however, unless some macros
- in webmac.tex are redefined.)
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- The output TeX file name is formed by adding .tex to the
- root of the WEB file name.
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- Last change: 5/27/90 1
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- WEB(1) USER COMMANDS WEB(1)
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- There are several macros that probably should be redefined
- by the programmer at the beginning of the WEB file. It is a
- good idea to set \title to the name of the program. And, to
- cause output of only changed modules, one can say
- \let\maybe=\iffalse (usually as the first change in the
- change file).
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- FILES
- TeX:inputs/webmac.tex TeX macros used by weave output.
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- SEE ALSO
- The WEB System of Structured Documentation and
- LiterateProgramming, by D.E. Knuth.
- WeavingaProgram, by Wayne Sewell
- tex(1), pc(1)
- pxp(1) (for formatting tangle output when debugging)
- TeX: The Program and METAFONT: The Program,volumesBandD Com-
- puters and Typesetting series, published by Addison-Wesley,
- are by far the largest extant examples of WEB programs.
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- AUTHORS
- WEB was designed by Donald E. Knuth, based on an earlier
- system called DOC (implemented by Ignacio Zabala). The tan-
- gle and weave programs are themselves written in WEB. The
- system was originally ported to Unix at Stanford by Howard
- Trickey, and at Cornell by Pavel Curtis.
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- Last change: 5/27/90 2
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