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********************************************************************************
 mcf2graph  : Convert Molecular Coding Format to graphics with Metafont/Metapost
 Author     : Akira Yamaji
 version    : 3.72   2015-09-22
 E-mail     : akira.yamaji5@gmail.com
 Located at : http://mirror.ctan.org/pkg/graphics/mcf2graph
 Home page  : http://molecoding.cocolog-nifty.com/blog/
********************************************************************************

1. Introduction
  Molecular Coding Format(MCF) is new linear notation represent chmical 
 structure diagram. This 'Coding' is named from coding(programing) technique
 like adressing,grouping,macro. There are no Meta language commands in MCF.
 mcf2graph.mf(metapost/metafont macro) convert MCF file to graphics file
 (pk font/PNG/SVG/EPS) or MDL MOL file(V2000).
 The software,MCF manual,TeX example can get from authors web site.

2. The distribution of software
 ( 1) README                 This file
 ( 2) mcf2graph.mf           Macro of Metafont / Metapost
 ( 3) mcf_manual.tex         MCF syntax manual(LaTeX file)
 ( 4) mcf_man_soc.mf         Molecular difinition file for mcf_manual.tex
 ( 5) mcf_man_soc-032.eps    No.32 EPS(with color) file of (4)
 ( 6) mcf_manual.pdf         PDF of (3) (used LaTeX,dvipdfmx)
 ( 7) mcf_example.tex        LaTeX example,
                               Make 'mcf_exa_soc-info.aux' before typeset
                               mpost -s ahangle=0 mcf_exa_soc.mf
 ( 8) mcf_exa_soc.mf         Molecular difinition file for mcf_example.tex
 ( 9) mcf_example.pdf        PDF of (7) (used LaTeX,dvipdfmx)
 (10) mcf_mplib_exa.tex      luamplib v2.11(LuaLaTeX) example
 (11) mcf_example.pdf        PDF of (10) typeset with LuaTeX(LuaLaTeX)

3. How to use mcf2graph with Metapost
 ( 1) mpost -s ahangle=1  FILENAME  output PNG file. (default value is eps)
 ( 2) mpost -s ahangle=2  FILENAME  output SVG file. 
 ( 3) mpost -s ahangle=3  FILENAME  output MDL Molfile(V2000)
 ( 4) mpost -s ahangle=0  FILENAME  output no graphic file.
 ( 5) mpost -s ahlength=1 FILENAME  output first definition only (for test)
 ( 6) mpost -s ahlength=2 FILENAME  output checklist.

4. Molecular definition file example

 input mcf2graph.mf;                % input main system
 font_wd#:=30mm#; font_ht#:=20mm#;  % font width,font height
 max_bond_width:=0.2;               % max fond length/font width
 %-----------------------------------------------------------------------
 beginfont("EN:Acetamiprid")             % Molecular name 1
   MCf(^^30,Ph,4\,!,NH,!,!~dr,N,!,CN)%   % Molecular Coding Format
 endfont
 %-----------------------------------------------------------------------
 bye

5. How to use mcf2graph with TeX(latex)
 Large number of molecular structures can be gathering by using TEX.
 mcf_example.tex is example of using LaTeX.

 \documentclass{article}
 \usepackage[dvipdfmx]{graphicx}%  Change option depend on your tex system
       **********************************************************
 % insert part of info.aux file
 %-------------------------------------------------------------------------
 \INFO{{F:MCF_SOC2}{C:0}{EN:Acetamiprid}}%
 %-------------------------------------------------------------------------
 % or insert next line
 \input mcf_exa_soc-info.aux  % filename of souce file : mcf_exa_soc.mf


6. How to use mcf2graph with luamplib(LuaLaTeX)
 It is possible to write MCF in LaTeX text with luamplib(ver.2.11).
 mcf_mplib_exa.tex is example of using luamplib(LuaLaTeX).

\documentclass{article}
%-------------------------------------------------------------------------------
\mplibcodeinherit{enable}%
\mplibverbatim{enable}%
\everymplib{if unknown Ph1: input mcf2graph.mf; fi}%
%-------------------------------------------------------------------------------
      **********************************************************
\begin{mplibcode}
  font_wd:=100mm; font_ht:=50mm;
   beginfont("EN:Acetamiprid")             % Molecular name 1
     MCf(^^30,Ph,4\,!,NH,!,!~dr,N,!,CN)%   % Molecular Coding Format
   endfont
\end{mplibcode}
%----------------------------------------------------------------------------

7. License
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.

8. Changelog
 ver. 3.50  / 2015-07-11   first version uploaded to ctan.
 ver. 3.51  / 2015-07-19   '?6`2' can use as '{,``2,?6,}'
 ver. 3.52  / 2015-07-20   '!!4`2' can use as '{,``2,!4,}'
 ver. 3.53  / 2015-07-29   support luamplib(LuaLaTeX)
 ver. 3.54  / 2015-08-03   maximum item number of MOLinfo can be changed
 ver. 3.55  / 2015-08-04   support luamplib(v2.11), renew mcf_mplib_exa.tex
 ver. 3.57  / 2015-08-14   improve AUX file format
 ver. 3.58  / 2015-08-18   improve calculation of molecular formula and weight
 ver. 3.59  / 2015-08-23   update MCF syntax manual
 ver. 3.61  / 2015-09-01   fix bug in local setting of font_wd# and font_ht#
 ver. 3.62  / 2015-09-07   improve numbering bond, numbering atom,
                           update MCF syntax manual
 ver. 3.63  / 2015-09-14   add command option of numbering address,
                           update MCF syntax manual
 ver. 3.70  / 2015-09-16   add new command | ,change syntax of !,!!,?,??
 ver. 3.71  / 2015-09-18   delete command !!,??
 ver. 3.72  / 2015-09-22   change command ^^ to <  and delete ^^