********************************************************************************
 mcf2graph  : Convert Molecular Coding Format to graphics with METAFONT/METAPOST
 Author     : Akira Yamaji
 version    : 3.86 2016-04-02
 E-mail     : mcf2graph@gmail.com
 Located at : http://www.ctan.org/pkg/mcf2graph
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1. Introduction
  Molecular Coding Format(MCF) is new linear notation represent chemical
 structure diagrams. This 'Coding' is named from coding(programing) technique
 adressing,grouping,macro,etc. There are no Meta language commands in MCF.
 mcf2graph.mf(METAFONT/METAPOST macro) convert MCF file to graphics file
 (pk font/PNG/SVG/EPS) or MDL MOL file(V2000).

2. The distribution of software
 ( 1) README                 This file
 ( 2) CHANGELOG              Changelog file of mcf2graph
 ( 3) mcf2graph.mf           Macro of Metafont / Metapost
 ( 4) mcf_manual.tex         MCF syntax manual(LaTeX file)
 ( 5) mcf_man_soc.mf         Molecular difinition file for mcf_manual.tex
 ( 6) mcf_man_soc-031.eps    No.31 EPS(with color) file of (4)
 ( 7) mcf_manual.pdf         PDF of (4) (used LaTeX,dvipdfmx)
 ( 8) mcf_example.tex        LaTeX example,
                               Make file 'mcf_exa_soc-info.aux' before typeset
                               >mpost -s ahangle=0 mcf_exa_soc.mf
 ( 9) mcf_exa_soc.mf         Molecular difinition file for mcf_example.tex
 (10) mcf_example.pdf        PDF of (8) (used LaTeX,dvipdfmx)
 (11) mcf_mplib_exa.tex      luamplib v2.11(LuaLaTeX) example
 (12) mcf_example.pdf        PDF of (11) typeset with LuaTeX(LuaLaTeX)

3. How to use mcf2graph with Metapost
 ( 1) >mpost -s ahangle=0  FILENAME  => output no graphic file.
 ( 2) >mpost -s ahangle=1  FILENAME  => output PNG file. (default:eps)
 ( 3) >mpost -s ahangle=2  FILENAME  => output SVG file. 
 ( 4) >mpost -s ahangle=3  FILENAME  => output MDL Molfile(V2000)
 ( 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
 %-- preamble -----------------------------------------------------------
 sw_auxout:=1;        % aux(information) file output on >
 sw_numberA:=0;       % numbering atom off              >
 sw_numberB:=0;       % numbering bond off              >
 sw_expand:=0;        % substituent expand mode off     >
 sw_start_vector:=0;  % start vector output off         > Gloval setting
 sw_font_frame:=0;    % font frame off                  >
 font_wd#:=60mm#;     % font width                      > 
 font_ht#:=40mm#;     % font height                     >
 var3:="calc_weight";  tag3:="MWc";                     > AUX file table
 var4:="calc_formula"; tag4:="FMc";                     >
 %-- molecular definition -----------------------------------------------
 beginfont("EN:Acetamiprid")           % molecular 1
   sw_font_frame:=1;                   % > Local setting
   MCf(<30,Ph,4\,!,NH,!,!~dr,N,!,CN)   % MCF
 endfont                               %
 beginfont("EN:Imidacloprid")          % molecular 2
 sw_start_vector:=1;                   % > Local setting
  MCf(<30,Ph,1:N,6:/Cl,3\,!,           % MCF
           |,?5,1:N,3:NH,2\\,!,NO2)    %
 endfont                               %
 %-----------------------------------------------------------------------
 bye

5. 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.

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