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-% \iffalse meta-comment
-%
-% Copyright (C) 2007-08 by
-% Joseph Wright <joseph.wright@morningstar2.co.uk>
-%
-% This work may be distributed and/or modified under the
-% conditions of the LaTeX Project Public License, either
-% version 1.3 of this license or (at your option) any later
-% version. The latest version of this license is in
-% http://www.latex-project.org/lppl.txt
-% and version 1.3 or later is part of all distributions of
-% LaTeX version 2003/12/01 or later.
-%
-% This work has the LPPL maintenance status `maintained.'
-%
-% The current maintainer of this work is Joseph Wright.
-%
-% This work consists of the source file chemscheme.dtx and
-% chemscheme.cdx
-% and the derived files chemscheme.ins,
-% chemscheme.sty,
-% chemscheme.pdf,
-% chemscheme-manual.pdf,
-% chemscheme-demo.ltx,
-% scheme-one.eps,
-% scheme-two.eps,
-% jawltxdoc.sty and
-%
-% TDS-ready files:
-% The compressed file chemscheme.tds.zip contains an unpacked
-% version of all of the files included here, and pre-compiled
-% documentation in PDF format. Simply decompress
-% chemscheme.tds.dtx in your local TeX directory, run your hash
-% program (texhash, initexmf --update-fndb, etc.) and everything
-% will be ready to go. The user documentation for the package is
-% called chemscheme-manual.pdf; the file chemscheme.pdf includes
-% the user manual and the fully-indexed source code.
-%
-% Unpacking:
-% (a) If chemscheme.ins is present:
-% tex chemscheme.ins
-% (b) Without chemscheme.ins:
-% tex chemscheme.dtx
-% (c) If you use LaTeX to generate files:
-% latex \let\install=y\input{chemscheme.dtx}
-%
-% Documentation:
-% (a) Without write18 enabled:
-% latex chemscheme.dtx
-% (Comment out "inactive" line in driver where indicated)
-% latex chemscheme.dtx
-% dvips -o chemscheme-pics.ps chemscheme.dvi
-% ps2pdf chemscheme-pics.ps
-% bibtex8 --wolfgang chemscheme.aux
-% makeindex -s gind.ist chemscheme.idx
-% makeindex -s gglo.ist -o chemscheme.gls chemscheme.glo
-% pdflatex chemscheme.dtx
-% pdflatex chemscheme.dtx
-% (b) With write18 enabled:
-% latex chemscheme.dtx
-% (Comment out "inactive" line in driver where indicated)
-% latex chemscheme.dtx
-% pdflatex chemscheme.dtx
-% pdflatex chemscheme.dtx
-% pdflatex chemscheme.dtx
-%
-% Installation:
-% Copy chemscheme.sty and the various .cfg files to a location
-% searched by TeX, and if required by your TeX installation, run
-% the appropriate command to build a hash of files (texhash,
-% initexmf --update-fndb, etc.)
-%
-% Note:
-% The jawltxdoc.sty file is not needed for installation,
-% only for building the documentation; it may be deleted
-% after producing the documentation (if necessary).
-%
-%<*ignore>
-% This is all taken verbatim from Heiko Oberdiek's packages
-\begingroup
- \def\x{LaTeX2e}%
-\expandafter\endgroup
-\ifcase 0\ifx\install y1\fi\expandafter
- \ifx\csname processbatchFile\endcsname\relax\else1\fi
- \ifx\fmtname\x\else 1\fi\relax
-\else\csname fi\endcsname
-%</ignore>
-%<*install>
-\input docstrip.tex
-\keepsilent
-\askforoverwritefalse
-\preamble
- ----------------------------------------------------------------
- The chemstyle bundle --- Schemes and style for chemistry
- Maintained by Joseph Wright
- E-mail: joseph.wright@morningstar2.co.uk
- Released under the LaTeX Project Public License v1.3 or later
- See http://www.latex-project.org/lppl.txt
- ----------------------------------------------------------------
-
-\endpreamble
-\Msg{Generating chemscheme files:}
-\generate{\file{jawltxdoc.sty}{\from{\jobname.dtx}{jawltxdoc}}
-}
-\usedir{tex/latex/chemstyle}
-\generate{\file{\jobname.sty}{\from{\jobname.dtx}{package}}
-}
-\usedir{source/latex/chemstyle}
-\generate{\file{\jobname.ins}{\from{\jobname.dtx}{install}}
-}
-\nopreamble
-\usedir{doc/latex/chemstyle}
-\generate{\file{\jobname.bib}{\from{\jobname.dtx}{refs}}
-}
-\nopreamble\nopostamble
-\usedir{doc/latex/chemstyle}
-\generate{\file{scheme-one.eps}{\from{\jobname.dtx}{scheme}}
- \file{scheme-two.eps}{\from{\jobname.dtx}{scheme,labels}}
- \file{chemscheme-demo.ltx}{\from{\jobname.dtx}{demo}}
-}
-\endbatchfile
-%</install>
-%<*ignore>
-\fi
-% Will Robertson's trick
-\immediate\write18{bibtex8 --wolfgang \jobname}
-\immediate\write18{makeindex -s gind.ist -o \jobname.ind \jobname.idx}
-\immediate\write18{makeindex -s gglo.ist -o \jobname.gls \jobname.glo}
-\immediate\write18{dvips -o \jobname-pics.ps \jobname.dvi}
-\immediate\write18{ps2pdf \jobname-pics.ps}
-%</ignore>
-%<*driver>
-\PassOptionsToClass{a4paper}{article}
-\documentclass[german,english,UKenglish]{ltxdoc}
-\EnableCrossrefs
-\CodelineIndex
-\RecordChanges
-%\OnlyDescription
-\usepackage{jawltxdoc}
-% A bit of one-off trickery for this package
-% Use the method described in the documentation if you
-% want to compile this DTX using PDFLaTeX
-\usepackage[final
-% Comment out the next line when using PDFLaTeX after the initial
-% LaTeX run!
-% ,inactive
- ]{pst-pdf}
-\begin{document}
- \DocInput{\jobname.dtx}
-\end{document}
-%</driver>
-% \fi
-%
-%\CheckSum{404}
-%
-% \CharacterTable
-% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
-% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
-% Digits \0\1\2\3\4\5\6\7\8\9
-% Exclamation \! Double quote \" Hash (number) \#
-% Dollar \$ Percent \% Ampersand \&
-% Acute accent \' Left paren \( Right paren \)
-% Asterisk \* Plus \+ Comma \,
-% Minus \- Point \. Solidus \/
-% Colon \: Semicolon \; Less than \<
-% Equals \= Greater than \> Question mark \?
-% Commercial at \@ Left bracket \[ Backslash \\
-% Right bracket \] Circumflex \^ Underscore \_
-% Grave accent \` Left brace \{ Vertical bar \|
-% Right brace \} Tilde \~}
-%
-% \GetFileInfo{\jobname.sty}
-%
-% \changes{v1.0}{2007/07/21}{Initial public release}
-% \changes{v1.1}{2007/08/05}{Added float centring code}
-% \changes{v1.2}{2007/08/18}{Removed \texttt{chapter} option}
-% \changes{v1.2}{2007/08/18}{Improved emulation of standard float
-% types}
-%\changes{v1.2a}{2007/09/19}{License changed from GPL to LPPL}
-%\changes{v1.2a}{2007/09/19}{Documentation for PDF use added}
-%\changes{v1.3}{2007/10/04}{Improved French and German
-% \texttt{babel} support}
-%\changes{v1.4}{2008/06/24}{Added support for \pkg{floatrow}}
-%
-%\setkeys{lst}{language=[LaTeX]{TeX},moretexcs={}}
-%
-%\DoNotIndex{\@arabic,\@chapter,\@ifclassloaded,\@ifnextchar}
-%\DoNotIndex{\@ifpackageloaded,\@ifundefined,\@ne,\@tempa,\@tempb}
-%\DoNotIndex{\@undefined,\‘,\addto,\addtocontents,\addtodef}
-%\DoNotIndex{\addvspace,\advance,\AtBeginDocument,\backmatter}
-%\DoNotIndex{\begin,\c@chapter,\caption,\captionsfrench}
-%\DoNotIndex{\captionsfrenchb,\captionsgerman,\captionsngerman}
-%\DoNotIndex{\centering,\cftsetindents,\CNlabel,\CNlabelsub}
-%\DoNotIndex{\compound,\counterwithin,\counterwithout,\csname}
-%\DoNotIndex{\DeclareNewFloatType,\DeclareVoidOption,\def}
-%\DoNotIndex{\define@key,\documentclass,\edef,\else,\end,\endcsname}
-%\DoNotIndex{\expandafter,\FB@makecaption,\fi,\floatname,\floatsetup}
-%\DoNotIndex{\ifartopt,\IfLanguageName,\ifnum,\ifx,\includegraphics}
-%\DoNotIndex{\insertchapterspace,\kill@lastcounter,\label}
-%\DoNotIndex{\languagename,\let,\listof,\lowercase,\MessageBreak}
-%\DoNotIndex{\NeedsTeXFormat,\newcommand,\newcount,\newcounter}
-%\DoNotIndex{\newfloat,\newif,\newlistentry,\newlistof,\p@}
-%\DoNotIndex{\PackageError,\PackageInfo,\PackageWarning}
-%\DoNotIndex{\ProcessKeyvalOptions,\protect,\ProvidesPackage}
-%\DoNotIndex{\psfrag,\raggedleft,\relax,\renewcommand}
-%\DoNotIndex{\RequirePackage,\scshape,\selectlanguage,\setcounter}
-%\DoNotIndex{\SetupKeyvalOptions,\space,\string,\textsf,\the}
-%\DoNotIndex{\thechapter,\usepackage,\z@}
-%
-% \title{\texttt{chemscheme} --- Support for chemical schemes%
-% \thanks{This file describes version \fileversion, last revised
-% \filedate.}}
-% \author{Joseph Wright%
-% \thanks{E-mail: joseph.wright@morningstar2.co.uk}}
-% \date{Released \filedate}
-%
-% \maketitle
-%
-%\newcommand*{\flttype}[1]{\texttt{#1}}
-%\begin{abstract}
-% The \currpkg package consists of two parts, both related to
-% chemical schemes. The package adds a \flttype{scheme} float type
-% to the \LaTeX\ default types \flttype{figure} and \flttype{table}.
-% The \flttype{scheme} float type acts in the same way as those
-% defined by the \LaTeX\ kernel, but is intended for chemical
-% schemes. The package also provides a method for adding automatic
-% chemical numbering to schemes.
-%\end{abstract}
-%
-%\begin{multicols}{2}
-%\tableofcontents
-%\end{multicols}
-%
-%\section{Introduction}
-% By default, \LaTeX\ defines two float types, \flttype{figure} and
-% \flttype{table}. Synthetic chemists make heavy use of schemes,
-% which need a \flttype{scheme} float type. This is provided by
-% \currpkg, in a manner consistent with the kernel floats.
-%
-% Synthetic chemists also number compounds for ease of reference.
-% There are a number of \LaTeX\ packages which cover this area, most
-% notably \pkg{bpchem} and \pkg{chemcompounds}. However, adding
-% numbers automatically to schemes is not covered by any existing
-% package. The \currpkg package seeks to rectify this.
-%\floatcontentscentre
-%
-%\section{Floating schemes}
-%\subsection{Basic use}
-%\DescribeEnv{scheme}
-% The package provides a new float type, scheme, accessed in the
-% usual way.
-%\begin{LaTeXexample}[float]
-% \begin{scheme}[ht]
-% \includegraphics{scheme-one}
-% \caption{A scheme with no compound numbers.}
-% \end{scheme}
-%\end{LaTeXexample}
-% The \flttype{scheme} float is designed to behave in the same way as
-% the standard \LaTeX\ float environments \flttype{figure} and
-% \flttype{table}. Thus schemes will be placed at the top of a page,
-% where possible. As shown in the example, the use of positional
-% modifiers is allowed. Labelling and referencing schemes also
-% follows the \LaTeX\ conventions. \currpkg works hard to emulate
-% the document class in use, and so the exact behaviour will depend
-% on whether the standard classes, \textsc{koma}-Script or
-% \pkg{memoir} are being used.
-%
-%\DescribeMacro{\listofschemes}
-%\DescribeMacro{\listschemename}
-% To match the \cs{listoffigures} and \cs{listoftables} macros
-% provided by the \LaTeX\ kernel, \currpkg provides a
-% \cs{listofschemes} command. This works in the same way as the
-% kernel commands, with the default text stored in the macro
-% \cs{listschemename}. Users upgrading from version 1.1 should note
-% the change of macro name (from \cs{listscheme}). This is to bring
-% \currpkg into line with the \LaTeX\ kernel naming convention. Also
-% notice that \cs{listofschemes} no longer accepts an optional
-% argument. The standard output is illustrated below.
-%\begin{LaTeXexample}[resultonly]
-% \listofschemes
-%\end{LaTeXexample}
-%
-%\subsection{Altering the defaults}
-%\DescribeOption{floats}
-% There are a number of methods available to generate new float
-% types. The \pkg{memoir} class can do this internally, or the
-% \pkg{float} or \pkg{floatrow} packages can be loaded to provide the
-% necessary system. When \pkg{memoir} is used, \currpkg uses the
-% internal systems for generating new floats; for the standard
-% classes, \pkg{floatrow} is used by default. The \opt{floats}
-% package option can be used to control which method is employed.
-% This uses the key--value system, can be given the values
-% \opt{float}, \opt{floatrow} or \opt{memoir}:
-%\begin{LaTeXexample}[noexample]
-% \usepackage[floats=float]{chemscheme}
-%\end{LaTeXexample}
-% or
-%\begin{LaTeXexample}[noexample]
-% \usepackage[floats=floatrow]{chemscheme}
-%\end{LaTeXexample}
-% or
-%\begin{LaTeXexample}[noexample]
-% \usepackage[floats=memoir]{chemescheme}
-%\end{LaTeXexample}
-% The package will use the specified method if available (so
-% \opt{memoir} only works if using the \pkg{memoir} class!). If
-% either \pkg{float} or \pkg{floatrow} is loaded before \currpkg,
-% this forces the choice.
-%
-%\DescribeMacro{\schemename}
-% \cs{schemename} contains the text used in scheme captions (by
-% default \schemename). This is used in the same manner as
-% \cs{figurename} or \cs{tablename} to set up the text used in scheme
-% captions.
-%\begin{LaTeXexample}[float]
-% \renewcommand*{\schemename}{Illustration}
-% \begin{scheme}[ht]
-% \includegraphics{scheme-one}
-% \caption{A scheme that is not a Scheme!}
-% \end{scheme}
-%\end{LaTeXexample}
-%
-%
-%\subsection{\pkg{babel} support}
-% Schemes are provided with some support for \pkg{babel}. Currently,
-% in addition to English, \currpkg provides alternatives for
-% \cs{schemename} and \cs{listschemename} in French and German. Users
-% of other languages are encouraged to supply suitable translations
-% for inclusion in future versions of \currpkg.
-%
-%\section{Horizontal positioning of all floats}
-%\DescribeMacro{\floatcontentscentre}
-%\DescribeMacro{\floatcontentscenter}
-%\DescribeMacro{\floatcontentsleft}
-%\DescribeMacro{\floatcontentsright}
-% The \LaTeX\ default is to position all float contents flush-left.
-% There is no ``hook'' provided to alter this. The \currpkg package
-% therefore provides commands to align all float contents
-% automatically. As the macro names make clear,
-% \cs{floatcontentscentre} will make all floats centred (for users
-% speaking U.S.~English, the alternative spelling
-% \cs{floatcontentscenter} is also available). The default behaviour
-% is restored using the command \cs{floatcontentsleft}. Finally,
-% \cs{floatcontentsright} is provided for use if needed. Notice that
-% the float positioning commands should be given \emph{outside}
-% floating environments, and apply to all subsequent floats.
-%\begin{LaTeXexample}[float]
-% \floatcontentsleft
-% \begin{scheme}[ht]
-% \includegraphics{scheme-one}
-% \caption{A flush-left scheme.}
-% \end{scheme}
-% \floatcontentsright
-% \begin{scheme}[ht]
-% \includegraphics{scheme-one}
-% \caption{A flush-right scheme.}
-% \end{scheme}
-% \floatcontentscentre
-%\end{LaTeXexample}
-%
-% It is important to note that the positioning mechanism used here
-% relies on a low-level hack of the \LaTeX\ kernel. This has been
-% tested with the standard \LaTeX\ classes, the \pkg{memoir} class
-% and the \textsc{koma}-Script bundled. Other document classes may
-% not give the desired behaviour.
-%
-%\section{Reference numbers in graphics}
-%\subsection{Background}
-% There are a number of packages available on \CTAN\ for tracking
-% compound reference numbers. The two with the most up to date and
-% comprehensive features are \pkg{bpchem} and \pkg{chemcompounds}.
-% Both allow in-text numbering to be handled automatically. However,
-% neither will allow the use of these numbers directly in schemes,
-% figures, \etc. Both leave it to the user to manually adapt schemes
-% to match any changes in numbering.
-%
-% The \currpkg package provides a mechanism for rectifying this
-% issue. The package makes use of the \pkg{psfrag} package, which
-% means that it can only directly produce DVI output (using \LaTeX).
-% However, direct PDF output using PDF\LaTeX\ is possible: see
-% Section~\ref{subsec:pdf}.
-%
-%\DescribeMacro{\chemschemeref}
-%\DescribeMacro{\chemschemerefsub}
-% Users upgrading from v1.2 should note that ``\texttt{chem}'' has
-% been removed from the start of most macro names. The main
-% referencing commands \cs{chemschemeref} and \cs{chemschemerefsub}
-% are retained for backward compatibility.
-%
-%\subsection{Usage}
-% Getting automated numbers into schemes is a two step procedure. In
-% the first step, schemes (or other graphics) should be prepared as
-% normal and saved as encapsulated postscript (EPS) files. The most
-% popular chemistry drawing package, \textsc{ChemDraw}, is able to do
-% this from the \texttt{Save As \ldots} dialog.
-%\DescribeMacro{\schemerefmarker}
-% The positions where the auto-labels should be have to be marked in
-% the EPS file. The marker should consist of an ``indicator'' that
-% the text is to be replaced, followed by a reference number or
-% letter. For automated substitution, the ``indicator'' text should
-% be the same in all graphics; the value it is stored in
-% \cs{schemerefmarker}, and has default value
-% \textsf{\schemerefmarker}. Thus the graphics should contain labels
-% \textsf{\schemerefmarker1}, \textsf{\schemerefmarker2}, \etc. A
-% suitable unmodified graphic is shown in in the next example.
-%\begin{LaTeXexample}[float]
-% \begin{scheme}[ht]
-% \includegraphics{scheme-two}
-% \caption{A scheme with temporary compound numbers.}
-% \end{scheme}
-%\end{LaTeXexample}
-% The value of \cs{schemerefmarker} may be altered as normal,
-% so for example to use \textsf{XXX} as the indicator for
-% replacement in all graphics, you would execute:
-%\begin{LaTeXexample}[noexample]
-% \renewcommand*{\schemerefmarker}{XXX}
-%\end{LaTeXexample}
-%
-%\DescribeMacro{\schemeref}
-% In the second step, the command \cs{schemeref} is used to indicate
-% the mapping of the temporary markers to the automatically-managed
-% numbering. The syntax of the command is
-% \cs{chemschemeref}\oarg{temp-marker}\marg{label}, where
-% \meta{temp-marker} is the marker used in the graphic, and
-% \meta{label} is the name assigned to the compound by the user. By
-% default, \currpkg will assume that \meta{temp-marker} consists of
-% the marker plus a number, beginning at 1 and incrementing by 1 for
-% each additional structure inside one float. Each replacement
-% requires a separate \cs{chemschemeref}, all of which should appear
-% before the relevant \cs{includegraphics} command.
-%
-% An example will make usage clearer. In the example used in this
-% document, the starting material is given label \texttt{IMesHCl} and
-% the product is called \texttt{IMes}. As is shown in the next
-% example, in the EPS file these are labelled \textsf{TMP1} and
-% \textsf{TMP2}, respectively. The automated package defaults are
-% used.
-%\begin{LaTeXexample}[float]
-% \begin{scheme}[ht]
-% \schemeref{IMesHCl}
-% \schemeref{IMes}
-% \includegraphics{scheme-two}
-% \caption{A scheme with automated compound numbers.}
-% \end{scheme}
-%\end{LaTeXexample}
-% With user-specified information on the text to be replaced, the
-% entire text to be matched must be given.\footnote{In this example,
-% this is redundant as the automated system will work fine.}
-%\begin{LaTeXexample}[float]
-% \begin{scheme}[ht]
-% \schemeref[TMP1]{IMesHCl}
-% \schemeref[TMP2]{IMes}
-% \includegraphics{scheme-two}
-% \caption{A scheme with explicitly numbered temporary labels.}
-% \end{scheme}
-%\end{LaTeXexample}
-% Notice that the new label is centred on the middle of the temporary
-% marker, with the same baseline. This should allow the user to
-% obtain good alignment of labels and structures.
-%
-%\DescribeMacro{\schemerefsub}
-% As described in Section~\ref{packages}, \currpkg supports
-% \pkg{bpchem}, which allows tracking of sub-labels (\textbf{1a},
-% \textbf{1b}, \etc). To allow use of these in schemes, the
-% \cs{schemerefsub} command is provided. This takes an additional
-% argument \marg{sub-label}, which is used to generate the
-% appropriate text. When used with \pkg{chemcompounds}, this command
-% will gobble its arguments and issue a warning; no substitution will
-% take place.
-%
-%\DescribeMacro{\schemerefformat}
-% The format of chemical references is controlled by the underlying
-% package, \pkg{bpchem} or \pkg{chemcompounds}. However, it is
-% useful to be able to specify additional formatting for schemes. By
-% default, \currpkg formats all reference numbers in a sans serif
-% font. This is controlled by \cs{schemerefformat}.
-%\begin{LaTeXexample}[float]
-% % This needs the color or xcolor package loaded
-% \renewcommand*{\schemerefformat}
-% {\color{magenta}\textit}
-% \begin{scheme}[ht]
-% \schemeref{IMesHCl}
-% \schemeref{IMes}
-% \includegraphics{scheme-two}
-% \caption{A scheme with altered label formatting.}
-% \end{scheme}
-%\end{LaTeXexample}
-% The additional formatting applied within schemes may be altered by
-% redefining \cs{schemerefformat}. By careful choice of the
-% font commands given here, good visual matching should be obtained
-% between the automatically-generated labels and other text in the
-% scheme. In this document, the \textsc{ChemDraw} source uses 10
-% point Arial, with the \LaTeX\ sans serif font provided by the
-% \pkg{helvet} package, loaded scaled to 95\,\%, \ie:
-%\begin{LaTeXexample}[noexample]
-% \usepackage[scaled=0.95]{helvet}
-%\end{LaTeXexample}
-% The \textsc{ChemDraw} file used to generate the example schemes is
-% included with the package as \file{chemscheme.cdx}.
-%
-%\iffalse
-%<*demo>
-%\fi
-%\subsection{\currpkg and
-% \texorpdfstring{PDF\LaTeX}{PDFLaTeX}\label{subsec:pdf}}
-% The automatic substitution of numbers in graphics relies on the the
-% \pkg{psfrag} package. This works with \textsc{PostScript} files,
-% and cannot therefore be used with PDF\LaTeX. However, all is not
-% lost as the \pkg{pst-pdf} package provides a method for including
-% \textsc{PostScript} files in a PDF\LaTeX\ run. However, this is
-% not automatic and some effort is needed by the user.\footnote{The
-% rest of this section is based closely on an example by Stefan
-% Pinnow.} The example below shows a example for using PDF\LaTeX\
-% with \currpkg.
-% \begin{macrocode}
-\documentclass{article}
-\usepackage[T1]{fontenc}
-\usepackage{graphicx,chemscheme}
-% Remove `inactive' after the first LaTeX run
-\usepackage[inactive,final]{pst-pdf}
-\begin{document}
-\floatcontentscentre
-An example file for PDFLaTeX use.
-\begin{scheme}
- \schemeref{IMesHCl}
- \schemeref{IMes}
- \includegraphics{scheme-two}
- \caption{A scheme with automated compound numbers.}
- \label{sc:scheme-one}
-\end{scheme}
-\end{document}
-% \end{macrocode}
-%\iffalse
-%</demo>
-%\fi
-%
-% First you need to run the file through \LaTeX, so your package can
-% make the replacements in the picture. Then you need another run
-% through \LaTeX\ with the \opt{inactive} option \pkg{pst-pdf}
-% removed so that the modified pictures are extracted.\footnote{You
-% can simply do the first \LaTeX\ run without loading \pkg{pst-pdf}
-% at all, if you prefer.} Do not worry that you end up with a very
-% odd looking DVI! Then you have to convert the extracted pictures to
-% PDF by the following commands
-%\begin{verbatim}
-% dvips -o \jobname-pics.ps \jobname.dvi
-% ps2pdf \jobname-pics.ps
-%\end{verbatim}
-% This converts the modified graphics into PDF format. After this,
-% you can use PDF\LaTeX\ as normal for your schemes. Notice that you
-% will have to repeat the process if you need to modify the schemes
-% or numbering in any way.
-%
-%\subsection{Managing chemical numbering\label{packages}}
-%\DescribeOption{bpchem}
-%\DescribeOption{chemcompounds}
-%\DescribeOption{tracking}
-% The \currpkg package can use one of two packages for management of
-% chemical numbering: \pkg{bpchem} and \pkg{chemcompounds}. As of
-% v1.3, \pkg{chemcompounds} is the default package for managing
-% reference numbers.\footnote{The change from \pkg{bpchem} is due to
-% issues with \pkg{hyperref} support. The method used by
-% \pkg{bpchem} to generate compound labels means that they are made
-% into hyperlinks by \pkg{hyperref}, and therefore end up coloured
-% when using the \opt{colorlinks} option. This is unlikely to be the
-% desired effect, and \pkg{chemcompounds} does not behave in this
-% way.} Both packages have advantages: \pkg{bpchem} allows the
-% tracking of sub-references (very common in organic chemistry),
-% whilst \pkg{chemcompounds} has a very well thought-out interface.
-% It is technically feasible to support both simultaneously, but this
-% is unlikely to have wide application. For this reason, \currpkg
-% loads only one package, and uses this package to provide numbering
-% management. The \currpkg package recognises the \opt{bpchem} and
-% \opt{chemcompounds} to control this; the key--value version
-% \opt{tracking=\ldots} can also be given.
-%
-%\section{Generating chemical schemes}
-%
-%\subsection{Overview}
-% There are a number of ways of generating the graphical content of
-% schemes. The choice of method will depend on what is available to
-% the user, and how complex the schemes desired are. In this section,
-% an overview of several approaches is given.\footnote{Thanks to
-% Norwid-R.\ Behrnd for suggesting this section and giving a number
-% of useful examples and tips.} The package author, who is a
-% research worker in a university, favours using \textsc{ChemDraw} as
-% it is regarded by many synthetic chemists as the best tool for this
-% job. However, this is clearly overkill for users requiring a
-% single diagram on a one-off basis. \textsc{ChemDraw} is also a
-% commercial package running only under Windows and the MacOS. The
-% following is necessarily somewhat brief and selective. For a
-% thorough overview of graphics in \LaTeX, see Goossens
-% \etal~\cite{Goossens2007}.
-%
-%\subsection{Macro-based methods}
-% At the most basic, a chemical scheme is simply a collection of
-% lines and symbols, as with any vector diagram. Hence, it is
-% possible to construct schemes directly using packages such as
-% PSTricks or \pkg{pgf}/Ti\emph{k}z. This is a complex method, and
-% cannot be recommended for anyone except the very experienced and
-% brave.
-%
-% At a more practical level, there are two packages available which
-% allow typesetting of chemical structures in (La)\TeX, using
-% specialised commands: XyM\TeX\ and ppch\TeX. Recent versions of
-% the XyM\TeX\ package have not been made available on \CTAN, and the
-% version held there is therefore considered to be obsolete. On the
-% other hand, the ppch\TeX\ system, developed originally for
-% Con\TeX{}t, is available. Both systems suffer from the lack of
-% chemical logic in the input: it is very hard to tell from the code
-% what is being represented. Drawing items such as ``curly arrows'',
-% or making subtle alterations to positioning, is very challenging in
-% purely macro-based systems. For these reasons, it is usually much
-% more sensible to examine the available graphical methods.
-%
-%\subsection{Graphical methods}
-% Moving to graphical systems, there is no reason that
-% general-purpose vector drawing packages cannot be used for schemes.
-% There are obviously several commercial (\textsc{CorelDraw},
-% \textsc{Adobe Illustrator}, \etc) and freeware (for example
-% the \textsc{gimp}) drawing packages that can be used in this way.
-% Simply rings and lines can easily be constructed, although in
-% general-purpose programs the user has to watch that all bonds
-% are the same length.
-%
-% For producing a large number of complex schemes, the particular
-% abilities of dedicated software become a necessity. As well as the
-% already-mentioned \textsc{ChemDraw}, programs such as \textsc{ISIS
-% Draw} and \textsc{ChemSketch} are available free for personal
-% use;\footnote{``Free'' as in without charge, not as in open
-% source.} these programs are all Windows specific. In the
-% open-source arena, there are a number of packages such as
-% \textsc{XDrawChem} and \textsc{BKchem}, which offer cross-platform
-% functionality. The differences between the various packages are in
-% the ease of use, and ability to generate well-formattd output (for
-% example, aligning structures).
-%
-% One which deserves mention for the \TeX\ user is TpX. This is a
-% general purpose Windows graphics program specifically aimed at
-% producing \TeX-friendly output (such as PSTricks and \pkg{tikz}
-% code) from a graphical interface. TpX can accept clipboard data
-% from other programs, so can be used to produce EPS files from
-% programs which do not have native export facilities (such as
-% \textsc{ISIS Draw}).
-%
-%\section{Known issues}
-%
-% The interaction of the different document classes, with options,
-% plus the \pkg{babel} system means ensuring every possibility is
-% covered is impossible. Users are asked to report any problems with
-% compatibility with other packages or emulation of the standard
-% float types. Additional \pkg{babel} strings are also welcome, as
-% are improvements to those already provided.
-%
-% \StopEventually{\bibliographystyle{unsrt}\bibliography{chemscheme}}
-%
-% \iffalse
-%<*package>
-% \fi
-%
-% \section{Implementation}
-%
-% \subsection{Setup code}
-%\begin{macro}{\csh@id}
-% The initial code goes through the usual steps of identifying the
-% package.
-% \begin{macrocode}
-\NeedsTeXFormat{LaTeX2e}
-\def\csh@id$#1: #2.#3 #4 #5-#6-#7 #8 #9${%
- #5/#6/#7\space v1.4a\space}
-\ProvidesPackage{chemscheme}
- [\csh@id $Id: chemscheme.dtx 48 2008-07-31 19:22:43Z joseph $
- Support for chemical schemes]
-% \end{macrocode}
-%\end{macro}
-%\changes{v1.4}{2008/06/19}{Option handling completely re-written}
-%\begin{macro}{\ifcsh@bpchem}
-% Package options are handled using the key--value method, with
-% \pkg{kvoptions} providing the back-end. Most of the code here is
-% pretty basic; the aim is to set up the correct handling of
-% float-creation and compound tracking.
-% \begin{macrocode}
-\RequirePackage{kvoptions,psfrag,iflang}
-\SetupKeyvalOptions{
- family=csh,
- prefix=csh@}
-\newif\ifcsh@bpchem
-\define@key{csh}{tracking}
- {\csh@bpchemtrue
- \lowercase{\edef\@tempa{#1}}%
- \def\@tempb{bpchem}%
- \ifx\@tempa\@tempb\else
- \def\@tempb{chemcompounds}%
- \ifx\@tempa\@tempb
- \csh@bpchemfalse
- \else
- \PackageError{chemscheme}
- {Unknown value `#1' for option numbers}
- {The `tracking' option accepts values `bpchem'
- and `chemcompounds'}%
- \fi
- \fi}
-\DeclareVoidOption{chemcompounds}{\csh@bpchemfalse}
-\DeclareVoidOption{bpchem}{\csh@bpchemtrue}
-\DeclareVoidOption{chapter}
- {\PackageInfo{chemscheme}
- {Ignoring obsolete option `chapter'}}
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\csh@fltpkg}
-% The provision of floats can be handled by \pkg{floatrow},
-% \pkg{float} or \pkg{memoir}. The user is given an option, but if
-% one of the packages is already loaded then this has to be taken
-% into account.
-% \begin{macrocode}
-\define@key{csh}{floats}
- {\lowercase{\renewcommand*{\csh@fltpkg}{#1}}%
- \def\@tempa{floatrow}%
- \ifx\csh@fltpkg\@tempa\else
- \def\@tempa{float}%
- \ifx\csh@fltpkg\@tempa\else
- \def\@tempa{memoir}%
- \ifx\csh@fltpkg\@tempa
- \@ifclassloaded{memoir}{}
- {\PackageWarning{chemscheme}
- {You asked for floats to be created using memoir,
- \MessageBreak but have used a different document
- class\MessageBreak Using floatrow instead}%
- \renewcommand*{\csh@fltpkg}{floatrow}}%
- \else
- \PackageError{chemscheme}
- {Unknown value `#1' for option numbers}
- {The `floats' option accepts values `float',
- `floatrow' and `memoir'}%
- \fi
- \fi
- \fi}
-\@ifpackageloaded{floatrow}
- {\newcommand*{\csh@fltpkg}{floatrow}%
- \define@key{csh}{floats}
- {\PackageInfo{chemscheme}{Package floatrow already
- loaded\MessageBreak Option `floats' disabled}}}
- {\@ifpackageloaded{float}
- {\newcommand*{\csh@fltpkg}{float}%
- \define@key{csh}{floats}
- {\PackageInfo{chemscheme}{Package float already
- loaded\MessageBreak Option `floats' disabled}}}
- {\@ifclassloaded{memoir}
- {\newcommand*{\csh@fltpkg}{memoir}}
- {\newcommand*{\csh@fltpkg}{floatrow}}}}
-\ProcessKeyvalOptions{csh}
-% \end{macrocode}
-%\end{macro}
-%\changes{v1.4}{2008/06/20}{Float creation rewritten}
-%\begin{macro}{\csh@load@memoir}
-%\begin{macro}{\csh@load@float}
-%\begin{macro}{\csh@load@floatrow}
-% The necessary support is loaded by using an appropriately-named
-% macro. For \pkg{memoir}, nothing actually has to be done.
-% \begin{macrocode}
-\newcommand*{\csh@load@memoir}{}
-\newcommand*{\csh@load@float}{%
- \@ifpackageloaded{float}{}
- {\let\newfloat\@undefined}
- \RequirePackage{float,caption}}
-\newcommand*{\csh@load@floatrow}{%
- \@ifpackageloaded{floatrow}{}
- {\let\newfloat\@undefined}
- \RequirePackage{floatrow,caption}}
-\csname csh@load@\csh@fltpkg\endcsname
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%
-%\subsection{Support for schemes}
-%\begin{macro}{\schemename}
-%\begin{macro}{\listschemename}
-%\changes{v1.2}{2007/08/18}{Replaces \cs{listschemes}}
-% The default name for a scheme, and the default title for the list
-% of schemes, are provided. Both command names follow the kernel
-% conventions for figures and tables; unlike the kernel versions,
-% however, these macros are not \cs{long}.
-% \begin{macrocode}
-\newcommand*{\schemename}{Scheme}
-\newcommand*{\listschemename}{List of Schemes}
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-%\begin{environment}{scheme}
-%\begin{macro}{\listofschemes}
-%\begin{macro}{\csh@makesch@memoir}
-%\begin{macro}{\csh@mksch@memoir}
-%\begin{macro}{\csh@makesch@float}
-%\begin{macro}{\csh@mksch@float}
-%\begin{macro}{\csh@makesch@floatrow}
-% As with package loading, three different macros are defined here to
-% create the new float type. As well as the basics of creating the
-% float, some work is needed as adjustments must be made to match the
-% style of the kernel floats. For the \pkg{floatrow} package, things
-% have to be done in the preamble, whereas for the others everything
-% happens later.
-% \begin{macrocode}
-\newcommand*{\csh@makesch@memoir}{%
- \AtBeginDocument{\csh@mksch@memoir}}
-\newcommand*{\csh@mksch@memoir}{%
- \newfloat[chapter]{scheme}{los}{\schemename}
- \kill@lastcounter{losdepth}
- \renewcommand*{\thescheme}{\thechapter.\@arabic\c@scheme}
- \addtodef{\@smemfront}{}{\counterwithout{scheme}{chapter}}
- \addtodef{\@smemmain}{}{%
- \ifartopt\else
- \counterwithin{scheme}{chapter}
- \fi}
- \addtodef{\backmatter}{}{%
- \ifartopt\else
- \counterwithout{scheme}{chapter}%
- \setcounter{scheme}{0}%
- \fi}
- \ifartopt
- \counterwithout{scheme}{chapter}%
- \fi
- \newlistof{listofschemes}{los}{\listschemename}
- \kill@lastcounter{losdepth}
- \newlistentry[chapter]{scheme}{los}{0}
- \cftsetindents{scheme}{0em}{2.3em}
- \addtodef{\insertchapterspace}{}%
- {\addtocontents{los}{\protect\addvspace{10pt}}}
- \@ifundefined{c@losdepth}%
- {\newcounter{losdepth}\setcounter{losdepth}{1}}{}}
-\newcommand*{\csh@makesch@float}{%
- \AtBeginDocument{\csh@mksch@float}}
-\newcommand*{\csh@mksch@float}{%
- \@ifundefined{chapter}
- {\newfloat{scheme}{tbp}{los}}
- {\newfloat{scheme}{tbp}{los}[chapter]%
- \csh@fixchapter}%
- \floatname{scheme}{\schemename}
- \newcommand*{\listofschemes}{%
- \listof{scheme}{\listschemename}}}
-% \end{macrocode}
-%\changes{v1.4a}{2008/07/31}{Fixed bug with float definition, \pkg{floatrow}
-% and chapters}
-% Using \pkg{floatrow}, the definition depends on whether chapters
-% are in use.
-% \begin{macrocode}
-\newcommand*{\csh@makesch@floatrow}{%
- \@ifundefined{chapter}
- {\DeclareNewFloatType{scheme}
- {fileext=los,placement=tbp,name=Scheme}}
- {\DeclareNewFloatType{scheme}
- {fileext=los,placement=tbp,name=Scheme,within=chapter}%
- \csh@fixchapter}%
- \newcommand*{\listofschemes}{%
- \listof{scheme}{\listschemename}}}
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\begin{macro}{\csh@fixchapter}
-%\begin{macro}{\csh@chapter}
-%\begin{macro}{\@chapter}
-% When not using \pkg{memoir}, chapters may or may not be defined.
-% This means a little extra work.
-% \begin{macrocode}
-\newcommand*{\csh@fixchapter}{%
- \@ifundefined{KOMAScriptVersion}
- {\renewcommand*{\thescheme}{%
- \ifnum\c@chapter>\z@ \thechapter.\fi \@arabic\c@scheme}}
- {}%
- \let\csh@chapter\@chapter
- \renewcommand{\@chapter}{%
- \addtocontents{los}{\protect\addvspace{10\p@}}%
- \csh@chapter}}
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-% The appropriate creation macro is now called.
-% \begin{macrocode}
-\csname csh@makesch@\csh@fltpkg\endcsname
-% \end{macrocode}
-%\end{macro}
-%\end{environment}
-%
-%\subsection{Positioning float contents}
-%\begin{macro}{\floatcontentscentre}
-%\begin{macro}{\floatcontentscenter}
-%\begin{macro}{\floatcontentsleft}
-%\begin{macro}{\floatcontentsright}
-% When using \pkg{floatrow}, centring all floats is easy. This is
-% not the case for other methods, and so some macros are provided.
-% The definitions depend on whether \pkg{floatrow} is in use.
-% \begin{macrocode}
-\def\@tempa{floatrow}
-\ifx\@tempa\csh@fltpkg
- \newcommand*{\floatcontentscentre}{%
- \floatsetup{objectset=centering}}
- \newcommand*{\floatcontentscenter}{%
- \floatsetup{objectset=centering}}
- \newcommand*{\floatcontentsright}{%
- \floatsetup{objectset=raggedleft}}
- \newcommand*{\floatcontentsleft}{%
- \floatsetup{objectset=raggedright}}
-% \end{macrocode}
-%\begin{macro}{\csh@floatboxreset}
-%\begin{macro}{\@floatboxreset}
-%\begin{macro}{\csh@everyfloat}
-% When \pkg{floatrow} is not in use, then a low-level hack of
-% \cs{@floatboxtreset} is used.
-% \begin{macrocode}
-\else
- \let\csh@floatboxreset\@floatboxreset
- \renewcommand*{\@floatboxreset}{%
- \csh@everyfloat
- \csh@floatboxreset}
- \newcommand*{\floatcontentscentre}{%
- \let\csh@everyfloat\centering}
- \newcommand*{\floatcontentscenter}{%
- \let\csh@everyfloat\centering}
- \newcommand*{\floatcontentsleft}{%
- \let\csh@everyfloat\relax}
- \newcommand*{\floatcontentsright}{%
- \let\csh@everyfloat\raggedleft}
-\fi
-\floatcontentsleft
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%\end{macro}
-%
-%\subsection{\pkg{babel} support}
-%\begin{macro}{\ifcsh@babel}
-% To make the new float type work with \pkg{babel}, some alternative
-% text is provided for non-English users. First, we need to know if
-% \pkg{babel} is loaded \emph{before} \currpkg or after, as this
-% affects one if the hacks needed for French.
-% \begin{macrocode}
-\newif\ifcsh@babel
-\@ifpackageloaded{babel}
- {\csh@babeltrue}
- {}
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\floatc@plain}
-% There is then one hack to be made for French which has to be made
-% before the beginning of the document \emph{if} \pkg{babel} is
-% loaded before \currpkg. This is only needed when \pkg{memoir} is
-% not in use. So there is a run of tests to see if the conditions
-% for the hack are met. \pkg{babel} support for French needs two
-% name checks, \emph{zut alors}!
-% \begin{macrocode}
-\@ifclassloaded{memoir}{}
- {\@ifpackageloaded{babel}
- {\IfLanguageName{french}
- {\let\floatc@plain\FB@makecaption}
- {\IfLanguageName{frenchb}
- {\let\floatc@plain\FB@makecaption}
- {}}}
- {}}
-% \end{macrocode}
-%\end{macro}
-% The definition of new stings is delayed until the beginning of the
-% document, so that things work if \pkg{babel} is loaded after
-% \currpkg. The multiple language names mean quite a bit of
-% repetition here.
-% \begin{macrocode}
-\AtBeginDocument{
- \@ifpackageloaded{babel}
- {\addto{\captionsngerman}{%
- \renewcommand*{\schemename}{Schema}}
- \addto{\captionsngerman}{%
- \renewcommand*{\listschemename}{Schemenverzeichnis}}
- \addto{\captionsgerman}{%
- \renewcommand*{\schemename}{Schema}}
- \addto{\captionsgerman}{%
- \renewcommand*{\listschemename}{Schemenverzeichnis}}
-% \end{macrocode}
-% French settings. \pkg{babel} also changes some style parameters here,
-% so \currpkg tries to match this.
-% \begin{macrocode}
- \addto{\captionsfrench}{%
- \renewcommand*{\schemename}{\scshape Sch\`eme}}
- \addto{\captionsfrench}{%
- \renewcommand*{\listschemename}{Table des sch\`emes}}
- \addto{\captionsfrenchb}{%
- \renewcommand*{\schemename}{\scshape Sch\`eme}}
- \addto{\captionsfrenchb}{%
- \renewcommand*{\listschemename}{Table des sch\`emes}}
-% \end{macrocode}
-% To make these changes, \pkg{babel} has to be instructed to reload the current
-% language.
-% \begin{macrocode}
- \expandafter\selectlanguage\expandafter{\languagename}
-% \end{macrocode}
-% If \pkg{babel} was loaded after \currpkg, and the document is in
-% French, then the non-\pkg{memoir} patch for floats is needed here.
-% This is the same one described earlier, which cannot be delayed to
-% here if \pkg{babel} is loaded first.
-% \begin{macrocode}
- \@ifclassloaded{memoir}{}
- {\IfLanguageName{french}
- {\ifcsh@babel\else
- \let\floatc@plain\FB@makecaption
- \fi}
- {\IfLanguageName{frenchb}
- {\ifcsh@babel\else
- \let\floatc@plain\FB@makecaption
- \fi}
- {}}}
- {}}{}}
-% \end{macrocode}
-%
-%\subsection{Reference numbers in graphics}
-%\begin{macro}{\schemerefmarker}
-%\changes{v1.3}{2007/10/04}{Name change}
-%\begin{macro}{\schemerefformat}
-%\changes{v1.3}{2007/10/04}{Name change}
-% The two macros \cs{schemerefmarker} and \cs{schemerefformat}
-% are used to allow customisation of the behaviour of the package.
-% Here defaults are provided.
-% \begin{macrocode}
-\newcommand*{\schemerefmarker}{TMP}
-\newcommand*{\schemerefformat}{\textsf}
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-%\begin{macro}{\csh@label}
-% Depending on the user options provided, either \pkg{bpchem} or
-% \pkg{chemcompounds} is loaded to manage chemical citations. The macro
-% \cs{chemsch@label} is defined as the labelling command of the
-% appropriate package.
-% \begin{macrocode}
-\ifcsh@bpchem
- \RequirePackage{bpchem}
- \let\csh@label\CNlabel
-\else
- \RequirePackage{chemcompounds}
- \let\csh@label\compound
-\fi
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\csh@num}
-% A counter is needed for automatic substitution of reference
-% numbers. This has to be a \TeX\ count, rather than a \LaTeX\
-% counter, as it has to be local.
-% \begin{macrocode}
-\newcount\csh@num
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\schemeref}
-%\changes{v1.3}{2007/10/04}{New macro}
-% The user macro for referencing a compound in a graphic. First the
-% automatic counter is incremented.
-% \begin{macrocode}
-\newcommand*{\schemeref}{%
- \advance\csh@num\@ne
-% \end{macrocode}
-% Now the presence of an optional argument is tested for. If there
-% is not one, the value of the automatic counter is used.
-% \begin{macrocode}
- \@ifnextchar[%]
- {\csh@schemeref}
- {\csh@schemeref[\schemerefmarker\the\csh@num]}}
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\csh@schemeref}
-% The internal command to substitute the temporary marker by
-% the automatic label text. The use of |[b][b]| ensures that
-% the new text is centred on the position of the marker.
-% \begin{macrocode}
-\def\csh@schemeref[#1]#2{%
- \psfrag{#1}[b][b]
- {\schemerefformat{\csh@label{#2}}}}
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\csh@schemerefsub}
-% For sub-referencing using \pkg{bpchem}, a similar macro is needed
-% using the \cs{CNlabelsub} command. This is defined here, with the
-% user macro later.
-% \begin{macrocode}
-\def\csh@schemerefsub[#1]#2#3{%
- \psfrag{#1}[b][b]
- {\schemerefformat{\CNlabelsub{#2}{#3}}}}
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\chemschemeref}
-%\changes{v1.3}{2007/10/04}{Converted to a wrapper for
-% \cs{schemeref}}
-% The \cs{chemschemeref} is now a backward-compatibility wrapper for
-% \cs{schemeref}.
-% \begin{macrocode}
-\newcommand*{\chemschemeref}[1]{\schemeref[#1]}
-% \end{macrocode}
-%\end{macro}
-%\begin{macro}{\schemerefsub}
-%\changes{v1.3}{2007/10/04}{New macro}
-%\begin{macro}{\chemschemerefsub}
-%\changes{v1.3}{2007/10/04}{Now a wrapper for \cs{schemerefsub}}
-% The user sub-referencing macro is defined in a package-dependent
-% manner. If \pkg{bpchem} is loaded, then \cs{schemerefsub} works in
-% the same way as \cs{schemeref}, but calling the |sub| version of
-% the internal macro.
-% \begin{macrocode}
-\ifcsh@bpchem
- \newcommand*{\schemerefsub}{%
- \advance\csh@num\@ne
- \@ifnextchar[%]
- {\csh@schemerefsub}
- {\csh@schemerefsub[\schemerefmarker\the\csh@num]}}
- \newcommand*{\chemschemerefsub}[1]{\schemerefsub[#1]}
-% \end{macrocode}
-% If \pkg{chemcompounds} is in use, then the sub-reference commands
-% gobble the arguments given. The automatic counter is still
-% incremented, so that things stay (reasonably) logical.
-% \begin{macrocode}
-\else
- \newcommand*{\schemerefsub}[3][]{%
- \advance\csh@num\@ne
- \PackageWarning{chemscheme}
- {`chemcompound' option active\MessageBreak
- Command \string\chemschemerefsub\space not used
- \MessageBreak Please alter your source to \MessageBreak
- \string\chemschemeref}}
- \newcommand*{\chemschemerefsub}{\schemerefsub}
-\fi
-% \end{macrocode}
-%\end{macro}
-%\end{macro}
-% \iffalse
-%</package>
-% \fi
-% \PrintChanges
-% \PrintIndex
-% \Finale
-%\iffalse
-%<*scheme>
-%!PS-Adobe-2.0 EPSF-1.2
-%%Creator: ChemDraw Std(tm) 10.0
-%<!labels>%%Title: scheme-one.eps
-%<labels>%%Title: scheme-two.eps
-%%CreationDate: 21/07/2007 12:00
-%%DocumentSuppliedProcSets: chemdict30 24 13
-%%DocumentFonts: Helvetica Helvetica-Oblique
-%%BoundingBox: 30 78 288 144
-%%EndComments
-%%BeginProcSet: chemdict30 24 13
-% ChemDraw Laser Prep
-% Copyright © 1985-2005 CambridgeSoft Corp., All Rights Reserved
-userdict/chemdict30 210 dict put
-chemdict30 begin/version 24 def/sv 13 def
-/b{bind def}bind def/L{load def}b/R{null def}b/d/def L/a/add L/al/aload L
-/as/astore L/at/atan L/cp/closepath L/cv/curveto L/cw/currentlinewidth L
-/cpt/currentpoint L/dv/div L/D/dup L/e/exch L/F/false L/f/fill L/fa/forall L
-/g/get L/gi/getinterval L/gr/grestore L/gs/gsave L/ie/ifelse L/ix/index L
-/l/lineto L/mt/matrix L/M/moveto L/m/mul L/n/neg L/np/newpath L/pb/pathbbox L
-/P/pop L/r/roll L/rl/rlineto L/rm/rmoveto L/ro/rotate L/rp/repeat L
-/ru/round L/sc/scale L/sl/setlinewidth L/sm/setmatrix L/st/stroke L
-/sp/strokepath L/sq/sqrt L/s/sub L/T/true L/tr/transform L/xl/translate L
-/xc/exec L/A R/N R/St R/X R/Y R/aL R/bL R/bS R/bd R/bs R/cX R/cY R/ch R/co R
-/fB R/fI R/fS R/fZ R/fl R/ft R/iX R/iY R/idx R/lh R/llx R/lly R/lp R/nH R
-/nSq R/newdict R/ps R/rad R/rev R/sL R/sba R/sbl R/sbs R/sn R/spa R/tB R
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-@book{Goossens2007,
- author = {Michel Goossens and Frank Mittelbach and Sebastian Rahtz and Denis Roegel},
- title = {The LaTeX Graphics Companion},
- subtitle = {Illustrating Documents with TeX and Postscript},
- publisher = {Addison Wesley},
- year = {2007},
- series = {Tools and Techniques for Computer Typesetting},
- edition = {2},
-}
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