From d318611dd6f23fcfedd50e9b9e24620b102ba96a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:44:05 +0200 Subject: Adding upstream version 1.23.0. Signed-off-by: Daniel Baumann --- contrib/chem/README.txt | 50 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 contrib/chem/README.txt (limited to 'contrib/chem/README.txt') diff --git a/contrib/chem/README.txt b/contrib/chem/README.txt new file mode 100644 index 0000000..06baed2 --- /dev/null +++ b/contrib/chem/README.txt @@ -0,0 +1,50 @@ +'chem' is a 'roff' language to generate chemical structure diagrams. +'@g@chem' is a 'groff' preprocessor that produces output suitable for +the '@g@pic' preprocessor. + +The original version of 'chem' is an 'awk' script written by Brian +Kernighan . The +source files of the 'awk' version of 'chem' are available at +. + +This project is a rewrite of 'chem' in Perl for the GNU 'roff' project +'groff'. It was written under Perl v5.8.8, but at least Perl v5.6 is +needed to run the Perl version of 'chem'. + +In comparison to the original 'awk' version of 'chem', the Perl +version does the following changements: +- the options -h, --help, -v, --version to output usage and version +information are added. +- remove some functions 'inline', 'shiftfields', and 'set' and some +variables that are used only once. + +The subdirectory 'examples/' contains example files for chem. They +are written in the 'chem' language. The file names end with .chem. + + +####### License + +Copyright (C) 2006-2020 Free Software Foundation, Inc. +Written by Bernd Warken . + +This file is part of 'chem', which is part of 'groff'. + +'groff' is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License (GPL) version 2 as +published by the Free Software Foundation. + +'groff' is distributed in the hope that it will be useful, but WITHOUT +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +The GPL2 license text is available in the internet at +. + + +##### Editor settings +Local Variables: +fill-column: 72 +mode: text +End: +vim: set textwidth=72: -- cgit v1.2.3