    Copyright 2000-2020 Free Software Foundation, Inc.

    Copying and distribution of this file, with or without modification,
    are permitted in any medium without royalty provided the copyright
    notice and this notice are preserved.

Ports of groff to non-POSIX environments
========================================

Microsoft Windows
-----------------

Cygwin makes a groff package available.

  https://cygwin.com/

Look for a convenient mirror site at the followung URL.

  https://cygwin.com/mirrors.html

Cygwin maintains a port status page.

  https://cygwin.com/packages/summary/groff.html

Cygwin, like most GNU/Linux distributions, separates groff build
artifacts into multiple components, largely for dependency management.
You may find the source package page of interest.

  https://cygwin.com/packages/summary/groff-src.html

The port is maintained in a Git repository.

  https://cygwin.com/git-cygwin-packages/?p=git/cygwin-packages/groff.git


grap
----

Ted Faber has written an implementation of Kernighan & Bentley's grap
language for typesetting graphs.

  http://www.lunabase.org/~faber/Vault/software/grap/


unroff
------

Per its README file,

  Unroff is a Scheme-based, programmable, extensible troff translator
  with a back-end for the Hypertext Markup Language.  Unroff is free
  software and is distributed both as source and as precompiled
  binaries.

    https://www-rn.informatik.uni-bremen.de/software/unroff/


Haart deroff
------------

Per its ReadMe.txt file,

  Deroff removes roff constructs from documents for the purpose of
  indexing, spell checking etc. My own implementation is a little
  smarter than traditional implementations, because it knows about
  certain -man and -mm macros. It is able to generate a word list for
  spell checking tools or omit headers for sentence analysis tools.

    https://caio.ueberalles.net/deroff/


doclifter
---------

Per its web page,

  [doclifter lifts] documents in nroff markups to XML-DocBook.

  Lifting documents from presentation level to semantic level is hard,
  and a really good job requires human polishing. This tool aims to do
  everything that can be mechanized, and to preserve any troff-level
  information that might have structural implications in XML comments.
  This tool does the hard parts. TBL tables are translated into DocBook
  table markup, PIC into SVG, and EQN into MathML (relying on pic2svg
  and GNU eqn for the last two).

    http://catb.org/~esr/doclifter


pic2plot
--------

pic2plot, part of the GNU plotutils package, can lift pic markup to SVG.
The plotutils package is available at

  http://www.gnu.org/software/plotutils/


Miscellaneous
-------------

* Ralph Corderoy's excellent page on troff:

    www.troff.org

  There are links for virtually everything related to troff.

* Dr. Robert Hermann's groff gems are available from

    http://www.eas.slu.edu/People/RBHerrmann/GROFF/index.html

  At present there are examples for

  o creating business cards
  o using groff to make large format posters for presentations

* Robert Marks's collection of useful macros and scripts is available
  from

    http://www.agsm.edu.au/~bobm/odds+ends/scripts.html

  Description:

  - "polish": Is a sed (= the Unix stream editor) script that does many
    things to ASCII text.  Amongst other things, it breaks lines at new
    sentences, reduces upper-case acronyms by one point size, adds
    diacriticals, changes simple quotes into smart quotes, and makes a
    few simple grammar checks.  The best way to see what it does is to
    run it as a sed script file (or files) on a text file and then
    compare the output file with the original.

  - "DropCaps" is a troff script which replaces the initial letters of
    paragraphs immediately after H1 and H2 headings with drop-capitals
    of specified point size, and automatically flows the text around the
    new drop cap.

  - "AJM Header" is a set of troff macros used in production of the
    Australian Journal of Management.  They use the Memorandum Macros
    (mm) of AT&T, and so should be invoked with the Unix troff -mm flag;
    they should also work with the GNU troff -mm flag.

* Thomas Baruchel <baruchel@libertysurf.fr> has developed Meta-tbl, a
  tbl postprocessor to manipulate table cells (like adding gray shades).
  The latest version can be found at

    http://perso.libertysurf.fr/baruchel/

* gpresent, written by Bob Diertens <B.Diertens@Uva.nl>.  From its
  README file:

    gpresent is a package for making presentations with groff and
    [a PDF viewer].  It consist[s] of a set of macros to be used with
    groff and a post-processor for manipulating the PostScript output of
    groff.  Without the use of the PAUSE macro, it can also be used for
    making slides.

  It is available from

    https://bob.diertens.org/corner/useful/gpresent/

* groff-pdfmark, written by Keith Marshall.

  Its home page describes it as providing "a suite of GNU roff macro
  packages, together with a Bourne shell driver script, designed to
  facilitate the creation of PDF files, using GNU roff as the primary
  typesetting engine."

  It is available from

    <https://savannah.nongnu.org/projects/groff-pdfmark>.

Documentation
-------------

Documentation of the AT&T implementations of the troff, tbl, pic, eqn,
and refer programs can be found at the following site.

  https://www.troff.org/papers.html

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