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TANGLE(1)              DragonFly General Commands Manual             TANGLE(1)

NAME
       tangle - translate WEB to Pascal

SYNOPSIS
       tangle webfile[.web] [ changefile[.ch] ]

DESCRIPTION
       This manual page is not meant to be exhaustive.  The complete
       documentation for this version of TeX can be found in the info file or
       manual Web2C: A TeX implementation.

       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.

       The Web language allows you to prepare a single document containing all
       the information that is needed both to produce 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.

       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.

       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.

SEE ALSO
       pc(1), pxp(1) (for formatting tangle output when debugging), tex(1).

       Donald E. Knuth, The Web System of Structured Documentation.

       Donald E. Knuth, Literate Programming, Computer Journal 27, 97-111,
       1984.

       Wayne Sewell, Weaving a Program, Van Nostrand Reinhold, 1989, ISBN
       0-442-31946-0.

       Donald E. Knuth, TeX: The Program (Volume B of Computers and
       Typesetting), Addison-Wesley, 1986, ISBN 0-201-13437-3.

       Donald E. Knuth, Metafont: The Program (Volume D of Computers and
       Typesetting), Addison-Wesley, 1986, ISBN 0-201-13438-1.

       These last two are by far the largest extant examples of Web programs.

       There is an active Internet electronic mail discussion list on the
       subject of literate programming; send a subscription request to
       litprog-request@shsu.edu to join.

AUTHORS
       Web was designed by Donald E. Knuth, based on an earlier system called
       DOC (implemented by Ignacio Zabala).  The tangle 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.

Web2C 7.2                      12 February 1993                      TANGLE(1)