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WEAVE(1) General Commands Manual WEAVE(1)


twill - translate WEB to TeX


twill [-x] webfile[.web] [changefile[.ch]]


The twill program is used to create a TeX file for viewing a Web program. It takes appropriate care of typographic details like page layout and the use of indentation, italics, boldface, etc., and it supplies extensive cross-index information in the form of 'mini-indexes' for each spread of pages and a 'master index' at the end that it gathers automatically.

The command line arguments are the same as for tangle except for the option: -x says to omit the indexes, 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.)

The output TeX file name is formed by adding .tex to the root of the Web file name.

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).


The environment variable WEBINPUTS is used to search for the input files, or the system default if WEBINPUTS is not set. See tex(1) for the details of the searching.


TeX macros used by twill output.


tangle(1) for references, authors, and other information.

09 January 2022 Web2C 2022