%\iffalse
%%  Time-stamp: "dtk.dtx        2006-08-11 18:18:53 CET Mittwoch  RN/HjG/hv"
%<*!ist>
%%
%%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%^^A $Id: dtk.dtx,v 1.9b 2006/08/11 21:03:42 hv Exp hv $
%%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Purpose:
%%      LaTeX Class and Styles for ``Die TeXnische Komoedie''.
%%
%% Documentation:
%%      The documentation  can be  generated  from  the original file
%%      dtk.dtx with the doc style/package. LaTeX the file dtk.tex to
%%      get the full documentation in DVI format.
%%
%%
%% Author: Gerd Neugebauer
%%         Mainzer Str. 8
%%         56321 Rhens (Germany)
%% Mail:   gene@gerd-neugebauer.de
%%
%% Copyright (C) 1995-1996 Gerd Neugebauer
%% Copyright (C) 1997-2006 DANTE, Deutschsprachige
%%                           Anwendervereinigung TeX e.V.
%%
%%  dtk.dtx is distributed in the hope that it  will  be useful, but
%%  WITHOUT  ANY  WARRANTY.    No   author  or  distributor  accepts
%%  responsibility to anyone for the consequences of using it or for
%%  whether it serves any particular purpose or works at all, unless
%%  he says so in writing.
%%
%%  Everyone is granted permission to  copy, modify and redistribute
%%  dtk.dtx,  provided  this copyright notice is preserved  and  any
%%  modifications are indicated.
%%
%%
%<*class>
%%  This class is still under development and may be replaced with a
%%  new version which provides enhanced functionality.
%</class>
%<*!class>
%%  This package is still under development and may be replaced with
%%  a new version which provides enhanced functionality.
%</!class>
%%
%\fi
%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% \title{A \LaTeX\ Class and Style for\\``Die \TeX{}nische
%        Kom{\"o}die''\thanks{This file documents \filename\ version
%        \fileversion\ as of \filedate.}}
% \author{Gerd Neugebauer\\
%          Mainzer Str.\ 8\\
%          56321 Rhens (Germany)\\
%          Net: \texttt{gene@gerd-neugebauer.de}}
%
% \date{{\footnotesize Documentation date: \docdate}}
%
% \maketitle
%
%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% \changes{0.24}{1996/05/10}{First public release.}
% \changes{0.25}{1996/05/27}{Towards the new layout}
% \changes{0.26}{1996/05/27}{Towards the new layout}
% \changes{0.27}{1996/05/27}{Towards the new layout}
% \changes{0.28}{1996/05/27}{Towards the new layout}
% \changes{0.29}{1996/06/21}{Logos improved. ContentsArt slightly modified.}
% \changes{1.0}{1996/07/18}{The new layout is ready. (DTK 1/96 in print)}
% \changes{1.1}{1996/09/13}{Fixing a minor problem with long titles.\\
%        double backslash in titles are now ignored in headlines and toc.}
% \changes{1.3}{1997/02/08}{Ancient layout moved to a class option file.}
% \changes{1.9-pre}{2005/02/04}{Merge changes due to RN made to
%       generated files back into DTX (HjG).}
% \changes{1.9-pre}{2005/02/04}{M-x delete-trailing-whitespace (HjG).}
% \changes{1.9-pre}{2005/03/23}{File userpackages.tex now generated (RN/HjG).}
% \changes{1.9a}{2005/10/29}{added flushleft environment (RN/hv).}
% \changes{1.9b}{2006/08/11}{added macro CTANurl (hv).}
% \changes{1.10}{2007/08/28}{new dtx file created (hv).}
%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% \DoNotIndex{\ ,\",\',\.,\[,\\,\],\^,\`,\~,\(,\),\,,\/,\-,\:,\=,\@,\~,\^}
% \DoNotIndex{\@M,\@dottedtocline}
% \DoNotIndex{\@gobble,\@gobbletwo,\@highpenalty,\@ifnextchar,\@ifstar}
% \DoNotIndex{\@ifundefined,\@namedef,\@plus,\@pnumwidth,\@startsection}
% \DoNotIndex{\@starttoc}
% \DoNotIndex{\@tempboxa,\@tempcnta}
% \DoNotIndex{\@tempdima,\@tempdimb,\@thefnmark,\@undefined}
% \DoNotIndex{\@ixpt,\@vpt,\@vipt,\@viipt,\@viiipt}
% \DoNotIndex{\@xpt,\@xipt,\@xiipt,\@xivpt,\@xviipt,\@xxpt,\@xxvpt}
% \DoNotIndex{\AA,\AE,\AtBeginDocument}
% \DoNotIndex{\CurrentOption,\DeclareOption,\H,\Huge,\L,\LARGE,\LaTeX,\Large}
% \DoNotIndex{\LoadClass,\O,\OE,\OptionNotUsed,\PassOptionsToClass}
% \DoNotIndex{\ProcessOptions,\ProvidesClass,\ProvidesPackage}
% \DoNotIndex{\RequirePackage,\TeX}
% \DoNotIndex{\aa,\addcontentsline,\addpenalty,\advance,\addvspace,\ae}
% \DoNotIndex{\ast,\arabic}
% \DoNotIndex{\b,\baselineskip,\begin,\begingroup,\bf,\bgroup,\egroup}
% \DoNotIndex{\bigskip,\box,\bullet}
% \DoNotIndex{\c,\cal,\catcode,\char,\chardef,\circ,\clearpage,\closein}
% \DoNotIndex{\closeout,\clubpenalty,\count,\csname}
% \DoNotIndex{\d,\def,\dimen,\diamond,\divide,\documentclass,\dp}
% \DoNotIndex{\divide}
% \DoNotIndex{\else,\em,\empty,\end,\endcsname,\endgroup,\endinput,\endlist}
% \DoNotIndex{\expandafter,\fbox,\fi,\footskip,\framebox,\frenchspacing}
% \DoNotIndex{\futurelet,\gdef,\global,\gobble}
% \DoNotIndex{\hangafter,\hangindent,\hbox,\headheight,\headsep,\hfil}
% \DoNotIndex{\hfill,\hrule,\hskip,\hspace,\hss,\ht,\huge,\ifcat,\ifcase}
% \DoNotIndex{\ifeof,\ifdim,\ifnum,\ifx}
% \DoNotIndex{\ignorespaces,\immediate,\index,\input,\it}
% \DoNotIndex{\itemindent,\itemsep,\jobname,\kern,\l,\labelsep,\labelwidth}
% \DoNotIndex{\large,\leavevmode,\leftmark,\leftskip,\let,\list}
% \DoNotIndex{\llap,\long,\lower}
% \DoNotIndex{\m@th,\makebox,\magstep,\makeindex,\markboth,\mbox,\medskip}
% \DoNotIndex{\multiply}
% \DoNotIndex{\newblock,\newcommand,\newcount,\newenvironment,\newfont}
% \DoNotIndex{\newif,\newpage,\newread,\newwrite}
% \DoNotIndex{\nobreak,\noindent,\normalsize,\null,\o,\oe}
% \DoNotIndex{\openin,\openout,\or,\pagestyle,\par,\paragraph,\parbox}
% \DoNotIndex{\parfillskip,\parindent,\parsep,\parskip,\partopsep}
% \DoNotIndex{\penalty,\quad}
% \DoNotIndex{\raggedbottom,\raise,\relax,\renewcommand,\renewenvironment}
% \DoNotIndex{\repeat,\rightskip,\rm,\rule}
% \DoNotIndex{\sbox,\sc,\scriptsize,\section,\selectfont,\setcounter}
% \DoNotIndex{\settowidth,\sf,\sfcode,\sl}
% \DoNotIndex{\sloppy,\small,\space,\ss,\string,\symbol}
% \DoNotIndex{\t,\tenex,\textstyle,\the,\thepage,\thispagestyle,\time,\tiny}
% \DoNotIndex{\topmargin,\topsep,\tt,\typeout}
% \DoNotIndex{\u,\unitlength,\usecounter,\v,\varepsilon,\vbox}
% \DoNotIndex{\vfill,\vsize,\vskip,\vspace,\vss}
% \DoNotIndex{\wd,\widowpenalty,\write,\xdef,\z@}
%
%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%    \CheckSum{2624}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  \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         \~}
%%
%%^^A%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%</!ist>
%
%    \begin{abstract}
%
%    dtk.dtx provides a class and style file for typesetting ``Die
%    \TeX\-nische Ko\-m\"o\-die''---the communications of the German
%    \TeX{} Users Group DANTE e.V. This means that this class can be
%    used by article writers to typeset a single article as well as to
%    produce the complete journal.
%
%    The class and style file is written in a way that it can be used
%    both with \LaTeX\,2.09 and \LaTeXe. Thus it can be used by all
%    persons which are familiar with any flavor of \LaTeX.
%
%    The features of \LaTeXe\ are provided in the \LaTeX\,2.09 mode only
%    to a certain extend. Thus it might not be possible to typeset an
%    article prepared for \LaTeXe\ with \LaTeX\,2.09.
%
%    On the other side it is possible to process an article prepared
%    for \LaTeX\,2.09 with \LaTeXe{} (in native mode). This is justified
%    since \LaTeXe{} is the standard nowadays and \LaTeX\,2.09 should
%    cease to exists in the next decade.
%    \end{abstract}
%
%    \newpage
%    \tableofcontents
%    \newpage
%
%    \section{The History}
%
%    This documentclass/style is a complete reimplementation of a
%    predecesor style. This predecessor style was a modification of
%    the tugboat.sty which has been carried out mainly by Gabriele
%    Kruljac. Some improvements have been made in this style by
%    Joachim Schrod and Luzia Dietsche.
%
%    In 1995 the it appeared necessary to have a document class for the
%    production of ``Die \TeX nische Kom\"odie''. Up to this time the
%    communications of the German speaking \TeX{} users group had been
%    typeset with \LaTeX\,2.09 which was already outdated at this
%    time. In addition ideas for an improved layout had been collected
%    which should be incorporated into the new class.
%
%    Thus Gerd Neugebauer started to derive a new class by modifying
%    options and macros of the standard document class \texttt{article}.
%
%    At this time it was not unususal for many installations not to
%    provide the current \LaTeXe{} but still to have \LaTeX\,2.09
%    only.  Thus one design decision was to have a document style as
%    well as a document class. The requirement was met by providing a
%    set of definitions which emulate some of the new features of
%    \LaTeX{} under the old releases.
%
%    The coding was done by Gerd Neugebauer but many influences of
%    others have found their way into the code. Even so nearly no code
%    has been taken from the predecessor style the layout has been
%    copied in the first release of dtk.dtx (1.0).
%
%    Into the next releases (1.1 to 1.3) many changes for the new
%    layout have been incorporated. Many suggestions of the editorial
%    board of ``Die \TeX nische Kom\"odie'' had been integrated.
%    Especially the following persons contributed during this process:
%    Luzia Dietsche, Bernd Raichle, Volker RW Schaa, Rainer Sch\"opf,
%    and Andreas Dafferner.
%
%    Over the years several additions and corrections have made it
%    into some additional packages which have been used for the
%    production of ``Die \TeX nische Kom\"odie''. Especially in 1999
%    the fonts have been changed from Computer Modern to EC. In 2000
%    the text area has been changed. Finally all changes have been
%    integrated into dtk.dtx. The contributions for this release came
%    from Bernd Raichle, Peter Willardt, Rolf Niepraschk, and Werner
%    Lemberg.
%
%    The 2002 edition of dtk.dtx includes some minor changes to
%    support the use besides the production of ``Die \TeX nische
%    Kom\"odie''. In addition the major change is that the
%    bibliography is typeset in ragged right.
%
%
%    \section{The User Interface}
%
%    The user interface can be divided into two parts. The first part
%    concerns the normal user who is writing a single article. The
%    second part concerns the user who composes a complete journal.
%
%
%    \subsection{The User Interface for Article Writers}
%
%    The user interface for ordinary users is mainly the interface as
%    it is provided by the documentclass article. In addition to the
%    normal commands the following macros and environments are defined:
%
%    \DescribeMacro{\address}
%    This macro is used to put the address of an author into the list of
%    authors. It should be given before the \verb|\maketitle| command. The
%    first argument is the first name of an author. The second argument is the
%    last name of the author. The third argument is it's address. Several
%    lines in the address are separated by \verb|\\|. Missing arguments should
%    be filled with \verb|\null|.
%
%    Several invocations of \verb|address| are possible. E.g. if the article
%    has been written by several authors. The address and the author can be
%    omitted completely --- e.g. for anonoymous letters to the editor.  But
%    this should not be the normal case.
%
%    \DescribeEnv{abstract}
%    Each article should have be started with a short paragraph describing
%    what this article is about. This paragraph is called abstract. The
%    environment \verb|abstract| is meant for marking a paragraph as
%    abstract.
%
%
%
%    The following restrictions should be taken into account:
%
%    The sectioning commands are mapped to their star variants.  This
%    means that the commands like \verb|\section| are not numbered. It
%    should not be tried to to put references to those commands.
%
%    The following logos are provided by this class and separately by
%    the package \verb|dtklogos| if not defined somewhere else. You
%    are strongly encouraged to use those macros to typeset the logos
%    instead of making your own.
%    \smallskip
%
%    \begin{tabular}{ll}
%    \texttt{\char'134AmSTeX}        &\AmSTeX        \\
%    \texttt{\char'134AmS}        &\AmS                \\
%    \texttt{\char'134BibTeX}        &\BibTeX        \\
%    \texttt{\char'134dante}        &\dante                \\
%    \texttt{\char'134Dante}        &\Dante                \\
%    \texttt{\char'134DTK}        &\DTK                \\
%    \texttt{\char'134eTeX}        &\eTeX                \\
%    \texttt{\char'134eV}        &\eV                \\
%    \texttt{\char'134emTeX}        &\emTeX                \\
%    \texttt{\char'134LAmSTeX}        &\LAmSTeX        \\
%    \texttt{\char'134LaTeXTeX} &\LaTeXTeX        \\
%    \texttt{\char'134LaTeXe}        &\LaTeXe        \\
%    \texttt{\char'134LaTeX}        &\LaTeX                \\
%    \texttt{\char'134LyX}        &\LyX                \\
%    \texttt{\char'134METAFONT}        &\MF                \\
%    \texttt{\char'134METAPOST}        &\MP                \\
%    \texttt{\char'134MF}        &\MF                \\
%    \texttt{\char'134MP}        &\MP                \\
%    \texttt{\char'134MakeIndex}&\MakeIndex        \\
%    \texttt{\char'134NFSS}        &\NFSS                \\
%    \texttt{\char'134NTS}        &\NTS                \\
%    \texttt{\char'134PS}        &\PS                \\
%    \texttt{\char'134PiCTeX}        &\PiCTeX        \\
%    \texttt{\char'134PubliCTeX}&\PubliCTeX        \\
%    \texttt{\char'134TUG}        &\TUG                \\
%    \texttt{\char'134TeXXeT}        &\TeXXeT        \\
%    \texttt{\char'134TeXeT}        &\TeXeT                \\
%    \texttt{\char'134WinEdt}        &\WinEdt        \\
%    \texttt{\char'134WinEdtKK}        &\WinEdtKK
%    \end{tabular}
%
%    \DescribeMacro{\footnote}
%    Footnotes are typeset in a special way. As a consequence of the
%    inplementation \TeX{} is not allowed to split footnotes across
%    several pages. Thus you have to keep your footnotes short. It is
%    bad style to pack the main body of text into footnotes (except
%    for critical editions).
%
%    \subsection{Logical Markup}
%
%    One of the advantages of \LaTeX\ is the possiblity to use logical
%    markup. For this purpose several markup macros are provided.
%    Unfortunately the macros provided are not sufficient in several
%    situations. Thus this class provides some additional markup
%    macros to come closer to the ideal situation.
%
%    \DescribeMacro{\File}
%    This macro is intended to be used for typesetting file names.
%
%    \DescribeMacro{\Package}
%    This macro is intended to be used for typesetting package names.
%
%    \DescribeMacro{\Program}
%    This macro is intended to be used for typesetting program names.
%
%    \DescribeMacro{\Command}
%    This macro is intended to be used for typesetting command names.
%    For instance command names are relevant when talking about Unix
%    commands.
%
%    \DescribeMacro{\Macro}
%    This macro is intended to be used for typesetting macro names.
%
%    \DescribeMacro{\Environment}
%    This macro is intended to be used for typesetting environment names.
%
%    \DescribeMacro{\Email}
%    This macro is intended to be used for typesetting email addresses.
%
%    \DescribeMacro{\CTANurl}
%    Use this macro instead of \verb+\url+ for references to the \CTAN.
%    It uses the \verb+\href+ and \verb+\nolinkurl+ from the package \Package{hyperref}.
%    An example for a reference is \verb+\CTANurl{graphics/pstricks/}+: \CTANurl{graphics/pstricks/}
%
%    \DescribeMacro{\Acronym}
%    This macro is intended to be used for typesetting acronyms. It is
%    highly recommended to use this macro sparsingly
%
%
%    \subsection{The Interface for the Production of the Whole Journal}
%
%    The first thing one needs to know is that a complete journal
%    starts with a title page. This title page contains the volume,
%    the number and the date of publication.  Since part of this
%    information is used later it is stored in macros.
%
%    \DescribeMacro{\DieTeXnischeKomoedie}
%    The macro \verb|\DieTeXnischeKomoedie| is provided for this purpose. It
%    takes three arguments. The first argument is the number. The second
%    argument is the annual set and the third argument is the publication
%    date.
%
%    \DescribeMacro{\CoverArt}
%    The macro \verb|\DieTeXnischeKomoedie| calls the macro \verb|\CoverArt|
%    to typeset the cover page. \verb|\CoverArt| gets the same three arguments
%    as the calling macro \verb|\DieTeXnischeKomoedie|. This macro is
%    responsible to fill the first page adequately. This maro might be
%    redefined to alter the layout of the journal.
%
%    \DescribeMacro{\Label}
%    The macro \verb|\label| has been redefined to be local for each
%    article. Thus it turned out to be necessary to allow assigning of
%    labels which are not restricted by this ``module system''. The
%    macro \verb|\Label| sets such a global label.
%
%    \DescribeMacro{\Ref}
%    The macro \verb|\ref| has been redefined to be local for each
%    article. The macro \verb|\Ref| references a global label set with
%    \verb|Label|.
%
%    \DescribeMacro{\Pageref}
%    The macro \verb|\pageref| has been redefined to be local for each
%    article. The macro \verb|\Pageref| references a global label set with
%    \verb|Label|.
%
%    \DescribeMacro{\NeedPackage}
%    Usually the article for the complete journal are stored in
%    different files. If an article requires a package it has to be
%    loaded in the preamble of the document. The macro
%    \verb|\NeedPackage| provides a means to specify the required
%    packages in the article files. Unfortunately \LaTeX{} does not
%    provide a way to load missing packages in the document itself
%    thus the only reasonable action for this macros is to issue a
%    warning message if a needed package is not found. Nevertheless
%    this helps finding potential problems.
%
%
%
%
%    \vfill\noindent\hrulefill%^^A---------------------------------------------
%
%    \emph{To be completed}
%
%    \noindent\hrulefill\vfill\null%^^A----------------------------------------
%
%
%    \subsection{The Interface for the Production of PDF Reprints}
%
%    A reprint of an article can be produced in PDF format. To
%    accomplish this the package \texttt{dtk-pdf} is provided. This
%    package makes provisions to produce an appropriate header and
%    typeset the address information at the end.
%
%    To use the package you can use a driver file with the following
%    structure:
%
%    \begin{quote}
%      \verb|\documentclass{dtk}|\\
%      \texttt{\textit{preamble for article}}\\
%      \verb|\usepackage{dtk-pdf}|\\
%      \verb|\renewcommand\Volume{|\texttt{\textit{volume}}\verb|}|\\
%      \verb|\renewcommand\Pages{|\texttt{\textit{pages}}\verb|}|\\
%      \verb|\begin{document}|\\
%      \verb|\input{|\texttt{\textit{tex\_file}}\verb|}|\\
%      \verb|\Address|\\
%      \verb|\end{document}|
%    \end{quote}
%
%    Here \texttt{\textit{preamble for article}} should be replaced by
%    the document preamble required for the production of the article.
%    \texttt{\textit{volume}} is the volume of ``Die \TeX nische
%    Kom\"odie'' in which the article has been published originally.
%    \texttt{\textit{pages}} is the range of pages on which is has
%    been published. Finally the article itself is included. This
%    assumes that the article---without preamble---is contained in a
%    file by its own.
%
%
%
%
%
%    \section{Notes on the Production of the Journal}
%
%    Several problems have to be solved for the production os the
%    whole journal. This section collects some of them and shows which
%    roads have been taken.
%
%    \subsection{References}
%    References are done in \LaTeX\ with \verb|\label| and
%    \verb|\ref|.  Since several articles are collected in the
%    complete journal it may happen that the same label is used in
%    different articles. To avoid name clashes the definitions of
%    \verb|\label| and \verb|\ref| have been modified to prepend a
%    unique prefix.
%
%    To enable you to make references across articles the original
%    definitions of \verb|\label| and \verb|\ref|  have been saved in
%    \verb|\Label| and \verb|\Ref| respectively.
%
%
%    \subsection{List of Authors}
%    The list of authors is collected for the whole journal. This list
%    is sorted alphabetically. To automate this process the names are
%    written to the index file and makeindex is used to perform the
%    sorting. Thus it is necessary for the complete journal to be run
%    through \LaTeX, makeindex, and \LaTeX\ again.
%
%
%    \subsection{Bibliography}
%    The bibliography is prepared with \BibTeX. Since several articles
%    are compiled we assume that the single articles are processed
%    separately before. During this processing \BibTeX\ can be used to
%    generate the appropriate bbl file.
%    Things are arranged to include the bbl file for the article in
%    question.
%
%    One problem is not solved. This is the uniqueness of the \BibTeX\
%    labels. Here manual invention is required.
%
%
%    \StopEventually{}
%    \newpage
%    \if@undefined\environment
%    \newenvironment{environment}[1]{}{}
%    \fi
%
%
%    \section{The Version Information}
%
%    The following lines define the version information for the class
%    and the pdf package file.
%
%    \begin{macrocode}
%<*class|pdf|logos>
\def\DTKrcs$#1: #2 #3${#2}
\def\filename{dtk.dtx}
\xdef\fileversion{\DTKrcs$Revision: 1.10 $}
\xdef\filedate{\DTKrcs$Date: 2007/08/28 18:17:42 $}
\let\docversion=\fileversion
\let\docdate=\filedate
%</class|pdf|logos>
%    \end{macrocode}
%
%
%    \section{The Documentation Driver}
%
%    The documentation driver changes dtk.dtx into a self-extracting
%    documentation.  Thus it is possible to run \LaTeX{} on dtk.dtx to
%    produce the documentation.
%
%    The documentation can be adapted in a file named dtk.dcf
%    (documentation configuration). This file can contain instructions
%    for \verb|docstrip|. Especially useful might be the instruction
%
%    \verb|\OnlyDescription|
%
%    which supresses the generation of the implementation description.
%
%    \changes{1.3}{1997/01/27}{The documentation driver has been
%    integrated.}
%    \begin{macrocode}
%<*driver>
\documentclass{ltxdoc}
\usepackage{dtklogos}
%    \end{macrocode}
%
%     Modify the behaviour of \verb|ltxdoc|. Those settings can be
%     overwritten with local settings afterwards.
%
%    \begin{macrocode}
\RecordChanges
\EnableCrossrefs
\CodelineIndex
\setcounter{IndexColumns}2
\setlength{\parskip}{.5ex}
\setlength{\parindent}{0pt}
%    \end{macrocode}
%
%     Local configurations can be made in \verb|dtk.dcf|.
%
%    \begin{macrocode}
\InputIfFileExists{dtk.dcf}{}{}
%    \end{macrocode}
%
%     Define some logos.
%
%    \begin{macrocode}
\begin{document}
%    \end{macrocode}
%
%     Ready to read the dtx file.
%
%    \begin{macrocode}
\DeleteShortVerb{|}
\DocInput{dtk.dtx}
%    \end{macrocode}
%
%     We want to see the change log.
%
%    \begin{macrocode}
\newpage
\PrintChanges
%    \end{macrocode}
%
%     An index is highly desirable.
%
%    \begin{macrocode}
\newpage
\PrintIndex
%    \end{macrocode}
%
%     That's it.
%
%    \begin{macrocode}
\end{document}
%</driver>
%    \end{macrocode}
%
%
%    \section{The Implementation}
%
%
%    The implementation is mainly based on existing styles/classes. This file
%    contains only adaptions required to provide the logical markup
%    and the definitions to get the special layout of ``Die \TeX
%    nische Kom\"odie''.
%
%
%    \subsection{Basic Definitions}
%
%    \begin{macrocode}
%<*class>
%    \end{macrocode}
%
%     Now we need a boolean to see if we are in the author version or
%     in the full version. The author version has several commands
%     disabled. The full version is turned on by giving the option
%     \verb|full| to the documentclass/style command.
%
%    \begin{macrocode}
\newif\ifDTK@Author@
\DTK@Author@true
%    \end{macrocode}
%
%    ???
%
%    \begin{macrocode}
\newif\ifDTK@Draft@
\newif\ifDTK@lineno@
\DTK@lineno@false
%    \end{macrocode}
%
%    The boolean \verb|DTK@german@| is used to determine if the german
%    package should be loaded automatically. Usually it is turned on.
%    Under certain circumstances it might be necessary to load other
%    packages before the german package. Thus this variable can be set
%    via a package option.
%
%    \begin{macrocode}
\newif\ifDTK@german@
\DTK@german@true
%    \end{macrocode}
%
%
%    \subsection{Compatibility Definitions}
%
%    Since we want to use this style with \LaTeX\,2.09 and \LaTeXe{} we have
%    to define a common interface. For this purpose we use a subset of
%    the style writers interface already defined for \LaTeXe{} style
%    writers. Since some macros are not defined in \LaTeX\,2.09 we
%    implement them --- at least to the degree needed here.
%
%    Starting with release 1.4 the backward compatibility may not work
%    any longer. It will be eliminated in a future release.
%
%    \begin{macrocode}
\ifx\documentclass\@undefined
%    \end{macrocode}
%
%    \begin{macro}{\RequirePackage}
%    The macro \verb|RequirePackage| simply tries to load the appropriate
%    style file. The category code of \verb|@| is changed temporarily.
%    The old value is is saved in \verb|\DTK@cat| and restored at the end.
%
%    Optional arguments are not supported, yet.
%
%    \begin{macrocode}
  \newcommand\RequirePackage[1]{
    \chardef\DTK@cat=\the\catcode`\@
    \catcode`\@=11
    \input{#1.sty}%
    \catcode`\@=\DTK@cat}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LoadClass}
%    The concept of class and package files has not been so different in
%    \LaTeX\,2.09. Thus the same that has been said for \verb|\RequirePackage|
%    holds also for the macro \verb|\LoadClass|. Thus we just make it a
%    synonym.
%
%    \begin{macrocode}
  \let\LoadClass=\RequirePackage
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\InputIfFileExists}
%    Now things get a little bit more complicated. To implement the
%    macro \verb|\InputIfFileExists| we try to open the file. If this
%    fails we assume that the file does not exist. The appropriate
%    action is performed in both cases.
%
%    \begin{macrocode}
  \newcommand\InputIfFileExists[3]{%
    \openin\DTK@file #1
    \ifeof\DTK@file\closein\DTK@file #3%
    \else\closein\DTK@file #2\input{#1}%
    \fi}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DeclareOption}
%    The options in \LaTeX\,2.09 are defined as special named
%    macros. This is emulated here. The star variant is simply mapped
%    to do nothing.
%    \begin{macrocode}
  \newcommand\DeclareOption{\@ifstar{\@gobble}{\DTK@DeclareOption}}
  \newcommand\DTK@DeclareOption[2]{\@namedef{ds@#1}{#2}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ProcessOptions}
%    In \LaTeX\,2.09 the options are processed automatically. Thus
%    this macro is simply a noop.
%    \begin{macrocode}
  \let\ProcessOptions=\relax
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\OptionNotUsed}
%    This feature is not present in \LaTeX\,2.09. Thus the argument is
%    silently absorbed and the macro is simply a noop.
%    \begin{macrocode}
  \let\OptionNotUsed=\gobble
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ProvidesClass}
%    This declaration is used to type out the version information.
%    \begin{macrocode}
  \def\ProvidesClass#1[#2]{\typeout{Document Style #1 #2}}
%    \end{macrocode}
%    \end{macro}
%
%    Just for fun we define some font switching commands. In fact the
%    behaviour in \LaTeXe{} is more complex. But I think these
%    definitions are enough to avoid errors.
%    \begin{macrocode}
  \newcommand\emph[1]{{\em #1}\/}
  \newcommand\textbf[1]{{\bf #1}}
  \newcommand\textrm[1]{{\rm #1}}
  \newcommand\textsc[1]{{\sc #1}}
  \newcommand\textsf[1]{{\sf #1}}
  \newcommand\textsl[1]{{\sl #1\/}}
  \newcommand\textit[1]{{\it #1\/}}
  \newcommand\texttt[1]{{\tt #1}}

  \@ifundefined{fontshape}{\let\fontshape=\@gobble}{}
  \@ifundefined{selectfont}{\let\selectfont=\relax}{}

  \newcommand\providescommand[2]{\ifx#1\@undefined\newcommand#1{#2}\fi}
%    \end{macrocode}
%
%    \begin{macrocode}
\fi
%    \end{macrocode}
%
%    We need a new handle to read files. This handle will be used to
%    implement \verb|\InputIfFileExists|. Since \verb|\newread| is
%    declared \verb|\outer| we have to allocate the new handle here. It is
%    just used in the \LaTeX\,2.09 mode.
%
%    \begin{macrocode}
\newread\DTK@file
%    \end{macrocode}
%
%    Now we can continue without considering the \LaTeX{} dialect any
%    more. Any changes we make from now on are exclusivly based on the
%    interface defined above.
%
%    This is all we had to do to implement the compatibility mode. It might
%    turn out that more features are desirable. Those extensions are left to
%    future versions of this class, eh sorry, style.
%
%
%
%    \subsection{Initializations}
%
%
%    Now we can start to define the class. The version date is taken
%    from the macro \verb|\filedate|. This macro is defined at the
%    beginning of this file. The value is changed by the version
%    control system RCS.
%    \changes{1.4}{2000/08/21}{File version added to class identifier.}
%    \begin{macrocode}
\ProvidesClass{dtk}[\filedate\space\fileversion\space  gene]
%    \end{macrocode}
%
%    ???
%
%    \begin{macrocode}
% RN 2005-01-15, siehe `bibtopic.sty'.
\newcommand\DTK@isnum[1]{%
  \if!\ifnum9<1#1!\else_\fi
      \expandafter\@firstoftwo
  \else
      \expandafter\@secondoftwo
  \fi
}
% RN 2005-01-31
\newcommand*\DTK@@thelinenumber{\thepage-\arabic{linenumber}}
%%%%
%    \end{macrocode}
%
%    The options to switch to other point sizes are disabled. Nobody
%    is supposed to use this class with another than the single design
%    size.
%    \begin{macrocode}
\DeclareOption{10pt}{\OptionNotUsed}
\DeclareOption{11pt}{\OptionNotUsed}
\DeclareOption{12pt}{\OptionNotUsed}
%    \end{macrocode}
%
%    The options to switch the oneside and twoside settings are
%    disabled. Nobody is supposed to use this class with another than
%    the single design size.
%    \begin{macrocode}
\DeclareOption{twoside}{\OptionNotUsed}
\DeclareOption{oneside}{\OptionNotUsed}
%    \end{macrocode}
%
%    We define an internal style option ``full''. This loads
%    the multicolumn package from the Mainz distribution. It is only
%    needed to produce the full journal. Additionally several macros
%    are only defined in the full version. This makes sure that authors can
%    not play with too much internal macros.
%    \begin{macrocode}
\DeclareOption{full}{\DTK@Author@false}
%    \end{macrocode}
%
%    The package option \verb|omitgerman| can be used to omit the
%    loading of the package \verb|german.sty|. This migth be necessary
%    if packages are required which have to be loaded before
%    \verb|german|.
%    \begin{macrocode}
\DeclareOption{omitgerman}{\DTK@german@false}
%    \end{macrocode}
%
%    In 1996 the layout of ``Die TeXnische Kom\"odie'' has been
%    changed.  The option \verb|ancient| can be used to switch back to
%    the old layout.
%    \begin{macrocode}
\DeclareOption{ancient}{\def\DTK@layout{95}}
%    \end{macrocode}
%    ???
%    \begin{macrocode}
% RN 2005-01-16
\DeclareOption{draft}{%
  \DTK@Draft@true
  \DTK@lineno@true
  \PassOptionsToPackage{pagewise}{lineno}%
  \PassOptionsToClass{\CurrentOption}{book}%
}
% RN 2005-01-30
\DeclareOption{linenumbers}{\DTK@lineno@true}
\DeclareOption{nolinenumbers}{\DTK@lineno@false}
\DeclareOption{pagewise}{%
  \PassOptionsToPackage{\CurrentOption}{lineno}}
\DeclareOption{running}{%
  \PassOptionsToPackage{\CurrentOption}{lineno}}
% RN 2005-01-31
% RN/HjG 2005-02-11
% Ein grauenvoller Hack!
\DeclareOption{ln-long}{\def\DTK@@thelinenumber{%
  %\def\Hugo{%
  \ifoddNumberedPage% eigtl. Even!!!
    \ifodd\c@page
      \@tempswatrue %C
    \else
      \@tempswafalse %D
    \fi
  \else
    \ifodd\c@page
      \@tempswafalse %A
    \else
      \@tempswatrue %B
    \fi
  \fi
  %}\Hugo
  %\@tempcnta=\c@page
  %\if@tempswa \advance\@tempcnta\@ne \fi
  \if@tempswa \advance\c@page\@ne \fi
  %\edef\thepage{\the\@tempcnta}%
  \thepage-\arabic{linenumber}}}
\DeclareOption{ln-short}{\def\DTK@@thelinenumber{%
  \arabic{linenumber}}}
%    \end{macrocode}
%    ??? Now done better!
%    \begin{macrocode}
\iffalse% RN 2005-01-15
\DeclareOption{95}{\def\DTK@layout{95}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareOption{96}{\def\DTK@layout{96}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareOption{97}{\def\DTK@layout{97}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareOption{98}{\def\DTK@layout{98}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareOption{99}{\def\DTK@layout{99}}
%    \end{macrocode}
%    \changes{1.4}{2000/08/12}{Option for 2000 added.}
%    \begin{macrocode}
\DeclareOption{00}{\def\DTK@layout{00}}
%    \end{macrocode}
%    \changes{1.5}{2001/04/23}{Option for 2001 added.}
%    \begin{macrocode}
\DeclareOption{01}{\def\DTK@layout{01}}
%    \end{macrocode}
%    \changes{1.7}{2001/10/04}{Option for 2002 added.}
%    \begin{macrocode}
\DeclareOption{02}{\def\DTK@layout{02}}
%    \end{macrocode}
%
%    The remaining options are handed down to the base class \verb|book|.
%    This works for \LaTeXe{} and is a noop for \LaTeX\,2.09.
%    \begin{macrocode}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{book}}
%    \end{macrocode}
%    ??? This is the way \dots!
%    \begin{macrocode}
\else
\DeclareOption*{%
  \DTK@isnum{\CurrentOption}%
    {\edef\DTK@layout{\CurrentOption}}%
    {\PassOptionsToClass{\CurrentOption}{book}}%
}
\fi
%    \end{macrocode}
%
%    Now we can process all options. Again this works for \LaTeXe{}
%    and is a noop for \LaTeX\,2.09 since the options are
%    automatically processed there.
%    \begin{macrocode}
\ProcessOptions
%    \end{macrocode}
%
%    \subsection{Loading the Used Packages/Styles}
%
%    This class is a variation of the \verb|book| class. Thus
%    we load the base class. This loading is done with the macro from
%    the interface definition or the built-in \LaTeXe{} primitive.
%    \begin{macrocode}
\LoadClass{book}
%    \end{macrocode}
%
%    ???
%
%    \begin{macrocode}
% RN 2005-01-30
\ifDTK@lineno@
  \RequirePackage{lineno}\linenumbers
  \RequirePackage{color}%
  \linenumbersep=.8ex
  \def\linenumberfont{\normalfont\scriptsize\sffamily\bfseries}%
  \definecolor{DTK@lineno@color}{cmyk}{0.26,0,0.76,0}% SpringGreen
  \def\thelinenumber{%
  \begingroup
    \fboxsep=.3ex\fcolorbox{black}{DTK@lineno@color}{%
      \DTK@@thelinenumber}%
  \endgroup}%
\fi
%%%%%%%%%%
%    \end{macrocode}
%
%    The T1 font encoding is used.
%    \changes{1.4}{2000/08/12}{T1 font encoding enabled.}
%
%    \begin{macrocode}
\RequirePackage[T1]{fontenc}
%    \end{macrocode}
%
%    ???
%
%    \begin{macrocode}
% RN 2005-01-15
\IfFileExists{lmodern.sty}{\RequirePackage{lmodern}}{}
\RequirePackage[full]{textcomp}
% RN/HjG 2005-03-23
\ifDTK@Author@\else
  \RequirePackage[utf8]{inputenc}
\fi
\usepackage[hyphens]{url}
\usepackage[newcommands,newparameters]{ragged2e}
\@ifundefined{flushleft}
  {\let\flushleft\FlushLeft\let\endflushleft\endFlushLeft}{}
%
\usepackage{filecontents}
%</class>
%    \end{macrocode}
%
%    For old issues of the journal the OT1 font encoding is used
%    instead.
%
%    \begin{macrocode}
%<*1995|1996|1997|1998>
\RequirePackage[OT1]{fontenc}
%</1995|1996|1997|1998>
%<*class>
%    \end{macrocode}
%
%    The package ``\texttt{ngerman}'' is used since this class is
%    intended to be used by german users mainly. As one result the
%    language is set to german as default. On the other side some
%    parameters are modified to get a layout according to german
%    habits. E.g. fench spacing is activated.
%
%    There are some known problems when (n)german.sty is used. Therefore
%    it might turn out necessary to load (n)german.sty after other
%    packages have been loaded. For this purpose the option
%    |omitgerman| can be used. To ensure proper operation of dtk it is
%    necesary to call the macro \verb|\DTKgerman| after the style
%    (n)german has been loaded.
%
%    \changes{1.7}{2001/11/03}{The package ngerman is used to support
%    the current orthography.}
%    \begin{macrocode}
\ifDTK@german@
\RequirePackage{ngerman}
\selectlanguage{ngerman}
\else
\typeout{*** Warning: Loading of (n)german has been omitted. You have to
  load it manually.}
\typeout{*** Don't forget to use the macro \string\DTKgerman\space
  afterwards.}
\fi
%<*1995|1996|1997|1998|1999>
\ifDTK@german@
\RequirePackage{german}
\selectlanguage{german}
\fi
%</1995|1996|1997|1998|1999>
%    \end{macrocode}
%
%    The package ``\texttt{multicol}'' is used in the full version. Thus
%    we only load it if the option \verb|full| has been given.
%    \changes{1.4}{2000/08/06}{Packages graphicx and color are required.}
%    \begin{macrocode}
% RN 2005-01-22
% Mindestens `multicol' wird auch im Autormodus gebraucht, falls dort 
% ein Index erstellt wird. Vermutlich "graphicx,color" ("xcolor"?) auch
% so allemeing\"ultig, dass es vorgezogen werden sollte!
\RequirePackage{multicol}
\ifDTK@Author@\else
%  \RequirePackage{multicol}
  \RequirePackage{graphicx,color}
% RN 2005-01-22
  \errorcontextlines=100\relax
\fi
\RequirePackage{dtklogos}
%    \end{macrocode}
%
%
%    \begin{macro}{\NeedPackage}
%    \changes{1.3}{1997/01/29}{Macro added.}
%    This macro can be used to declare in a single article which
%    packages are required. At this places it is too late to load
%    them if they are not loaded already. In stead a fat message is
%    presented which warns the user of potential problems.
%
%    This macro takes a single argument which is the name of
%    \emph{one} package. Multiple packages and versions are not
%    supported (yet).
%
%    This macro is copied and modified from an \LaTeX2\ (june 1996)
%    internal. It seems as \LaTeXe\ defines a control sequences for
%    each package which is loaded. This mechanism is exploited.
%
%    Since older versions of \LaTeX\ do not support this mechanism
%    warning are reported even so everything is ok.
%    \begin{macrocode}
\newcommand\NeedPackage[1]{%
  \expandafter\ifx\csname ver@#1.sty\endcsname\relax
    \typeout{***}%
    \typeout{***}%
    \typeout{*** The required package `#1' seems not to be loaded.}%
    \typeout{*** I try to stumble along as good as I can.}%
    \typeout{*** Expect some undefined macros or other errors.}%
    \typeout{***}%
    \typeout{***}%
  \fi}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Layout Parameters}
%
%    The layout can be influenced by a large number of
%    parameters.  Thus the design decisions have been made transparent
%    (to a certain degree at least). These options are not meant to be
%    changed except when a new layout is being designed and implemented.
%
%
%    The size of the paper is A5. Thus the paper dimensions are defined
%    appropriately.
%    \begin{macrocode}
\paperwidth  = 148.5mm
\paperheight = 210mm
%    \end{macrocode}
%    \changes{1.4}{2000/08/06}{New page dimensions for 1/2000.}
%    The height is set to 471\,pt; the width is 342pt.
%    \begin{macrocode}
\textheight = 471pt
\textwidth  = 333pt
%</class>
%    \end{macrocode}
%    The height is set to 484\,pt = 170.10654\,mm; the
%    width is 342\,pt = 120.19925\,mm. This is slightly larger than in the
%    predecessor style.
%    \begin{macrocode}
%<*1995|1996|1997|1998|1999>
\textheight = 484pt
\textwidth  = 342pt
%</1995|1996|1997|1998|1999>
%<*class>
%    \end{macrocode}
%
%    The page is flushed left. A left margin of one inch is the default
%    on any properly installed printer. Any adjustment of the
%    printable area on the page is left to the output driver.
%    \begin{macrocode}
\oddsidemargin  = 0pt
\evensidemargin = \oddsidemargin\oddsidemargin  -35.89157pt
\evensidemargin -17.70235pt
\topmargin  -55.66684pt
%\topmargin      = 0pt% RN 2005-01-16
%    \end{macrocode}
%
%    The head line needs some space. In fact this depends on some
%    configurable macros. Nevertheless we take the old values and
%    leave it to a user to change those values if required.
%    \begin{macrocode}
\headheight = 17pt
\headsep    = 17pt
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\headheight = 14pt
\headsep    = 12pt
%</1995>
%<*class>
%    \end{macrocode}
%
%    The foot line needs some space. The same remarks given above
%    apply here too.
%    \begin{macrocode}
\footskip = 24pt
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\footskip = 21pt
%</1995>
%<*class>
%    \end{macrocode}
%
%    Paragraphs are not indented but separated by additional lead
%    only. This lead may expand a little bit but it may not
%    shrink. (Since the whole journal is typeset with raggedbottom it
%    is not clear to me if this makes sense at all)
%    \begin{macrocode}
\parskip   = 0.5\baselineskip \advance\parskip by 0pt plus 2pt
\parindent = 0pt
%    \end{macrocode}
%
%    To reduce the probability that a float requires a complete page
%    we increase the allowed fraction which can be occupied by floats
%    at the top and the bottom of the page. Additionally we reduce the
%    fraction required for text.
%    \begin{macrocode}
\renewcommand\topfraction{.9}
\renewcommand\bottomfraction{.9}
\renewcommand\textfraction{.1}
%    \end{macrocode}
%
%
%    \changes{1.4}{2000/08/21}{columnsep reduced to 5pt}
%    \begin{macrocode}
\columnsep = 5pt
%</class>
%<*1995|1996|1997|1998|1999>
\columnsep = 10pt
%</1995|1996|1997|1998|1999>
%<*class>
%    \end{macrocode}
%
%    \changes{1.5}{2001/04/24}{emergencystretch set to 1.5em.}
%    \begin{macrocode}
\emergencystretch = 1.5em
%</class>
%<*1995|1996|1997|1998|1999|2000>
\emergencystretch = 0pt
%</1995|1996|1997|1998|1999|2000>
%<*class>
%    \end{macrocode}
%
%    As promised before we disable vertical adjustment of pages. This
%    seems to be a good strategy to avoid ragged apearance by too much
%    space between paragraphs.
%    \begin{macrocode}
\raggedbottom
%    \end{macrocode}
%
%    To avoid a bad layout we adjust some parameters. Thus we try to
%    avoid widows and clubs.
%    \begin{macrocode}
\clubpenalty  = 10000
\widowpenalty = 10000
%    \end{macrocode}
%    ???
%    \begin{macrocode}
% RN 2005-01-16 ???
\marginparwidth=1cm
%\marginparsep=\z@
\@ifdefinable\DTK@orig@marginpar{\let\DTK@orig@marginpar\marginpar}
\renewcommand*\marginpar{%
  \ClassWarning{dtk}{Command `\string\marginpar' not expected}%
  \DTK@orig@marginpar}
%
%    \end{macrocode}
%
%    \begin{macro}{\DTKgerman}
%    We will change some of the captions names used within \LaTeX{}. To avoid
%    that the package ``\texttt{german}'' undoes our efforts we anchor the
%    changes in the \verb|\captionsgerman| macro. To do so we have to save the
%    old meaning in an internal name.
%    \changes{1.5}{2001/04/24}{Method for ngerman added}
%    \begin{macrocode}
\newcommand\DTKgerman{
  \let\DTK@captionsgerman=\captionsgerman
  \let\captionsgerman=\DTK@captionsgerman
  \@ifundefined{l@ngerman}{}{\selectlanguage{ngerman}}%
}
%</class>
%    \end{macrocode}
%
%    \begin{macrocode}
%<*1995|1996|1997|1998|1999>
\renewcommand\DTKgerman{
  \let\DTK@captionsgerman=\captionsgerman
  \let\captionsgerman=\DTK@captionsgerman
  \selectlanguage{german}%
}
%</1995|1996|1997|1998|1999>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DTK@captionsgerman}
%
%    Now we can redefine the captions command. First of all we use the
%    old definition. Thus we avoid duplicating the whole definition
%    and maybe getting in trouble with some future version.
%    \begin{macrocode}
\newcommand\DTK@captionsgerman{
  \DTK@captionsgerman
%    \end{macrocode}
%
%    \begin{macro}{\refname}
%    Just in case that an article contains a list of references we
%    define the title for this section.
%    Well, in fact we assume that the \LaTeX{} used is not too
%    ancient. Otherwise this will not work properly.
%    \begin{macrocode}
  \gdef\refname{Literatur}%
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\bibname}
%    Ok. And now the same trick for the title of the bibliography.
%    \begin{macrocode}
  \gdef\bibname{Literatur}%
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\contentsname}
%    The headline for the table of contents is defined appropriately.
%    \verb|\volume| contains the number of the current volume. This
%    number is set by the macro producing the front page.
%    \begin{macrocode}
  \gdef\contentsname{Inhalt Heft \Volume}%
%    \end{macrocode}
%    \end{macro}
%
%    Now we are done. We just have to make sure that the new values
%    are activated by calling the new captions macros.
%
%    \begin{macrocode}
}
%    \end{macrocode}
%    \end{macro}
%
%    If the option german has been loaded automatically then we have
%    to modify the captions at once. Otherwise the user is responsible
%    to call \verb|\DTKgerman| after the package german has been loaded.
%    \begin{macrocode}
\ifDTK@german@
  \DTKgerman
\fi
%</class>
%    \end{macrocode}
%
%    \begin{macrocode}
%<*1995|1996|1997|1998|1999>
\ifDTK@german@
  \DTKgerman
\fi
%</1995|1996|1997|1998|1999>
%<*class>
%    \end{macrocode}
%
%    \begin{macro}{\addressname}
%    The heading for the list of authors is defined in this macro.
%    \begin{macrocode}
\newcommand\addressname{Autoren/Organisatoren}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\journalname}
%    The name of the journal is stored in this macro. This should make
%    it easier to use this class for other purposes than typesetting
%    ``Die \TeX nische Kom\"odie''. It is not the primary intention to
%    support this but some attempts have been made to use this class
%    for other publications.
%    \changes{1.4}{2000/08/12}{Macro introduced.}
%    \begin{macrocode}
\newcommand\journalname{Die \TeX nische Kom{\"o}die}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\volume}
%    The number of the current volume is stored in this macro. The
%    value is automatically set with the macro
%    \verb|\DieTeXnischeKomoedie|. Since this macro is usually only
%    used in the full version we provide a reasonable default.
%    \changes{1.4}{2000/08/12}{Current date and time added.}
%    \begin{macrocode}
\newcommand\Volume{?/??}
\newcommand\volume{\Volume\ --- Entwurf \today\
  \begingroup
    \count1=\time\divide\count1 60
    \count2=\count1 \multiply\count2 -60 \advance\count2\time
    \ifnum\count1<10 0\fi\the\count1:\ifnum\count2<10 0\fi\the\count2
  \endgroup
}
%    \end{macrocode}
%    \end{macro}
%    ???
%    \begin{macrocode}
% RN 2005-01-17
\newcommand*\DTK@corr@version{}
\ifDTK@Author@\else
  \newcommand*\DTK@today{}%
  \begingroup
    \count@\time
    \divide\count@ 60\relax
    \count2=-\count@
    \multiply\count2 60\relax
    \advance\count2 \time
    %% \loggingall %% Wuduh!
    \xdef\DTK@today{%
      \the\year-\two@digits{\the\month}-\two@digits{\the\day}% %!!! \the
      %\protect~% Warum geht das nicht?
      \noexpand\noexpand~%
      %% Wuduh! 2 \noexpand noetig? Weil \number\the 2mal zuschlaegt?
      %% Ohne \the langt 1 \noexpand!
      \two@digits{\the\count@}:\two@digits{\the\count2}}%
      %%\show\DTK@today
  \endgroup
  \ifDTK@Draft@
    \def\DTK@corr@version{\fbox{Korrekturversion:~\DTK@today}}%
    \AtEndOfClass{%
      \let\ps@empty=\ps@plain
      \let\ps@part=\ps@plain}%
  \else
    \let\@LN\@gobbletwo% Wegen .aux-Datei von vorherigem lineno-Lauf
    \let\@LN@col\@gobble
  \fi
\fi
%    \end{macrocode}
%
%    \begin{macro}{\footmark}
%    This macro contains the text of the running foot.
%    \begin{macrocode}
\newcommand\footmark{\journalname\ \volume}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ChapterFont}
%    This macro contains the font changing command issued before
%    typesetting a chapter title.
%    \begin{macrocode}
\newcommand\ChapterFont{\Large\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\ChapterFont{\Large\bf}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SectionFont}
%    This macro contains the font changing command issued before
%    typesetting the section heading.
%    \begin{macrocode}
\newcommand\SectionFont{\large\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\SectionFont{\normalsize\bf}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SubsectionFont}
%    This macro contains the font changing command issued before
%    typesetting the subsection heading.
%    \begin{macrocode}
\newcommand\SubsectionFont{\normalsize\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\SubsectionFont{\normalsize\it}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SubsubsectionFont}
%    This macro contains the font changing command issued before
%    typesetting the subsubsection heading and below.
%    \begin{macrocode}
\newcommand\SubsubsectionFont{\normalsize\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\SubsubsectionFont{\normalsize\it}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\AuthorFont}
%    This macro contains the font changing command issued before
%    typeseting the author of an article.
%    \begin{macrocode}
\newcommand\AuthorFont{\large\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\AuthorFont{\normalsize\rm}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TitleFont}
%    This macro contains the font changing command issued before
%    typeseting the title of an article.
%    \begin{macrocode}
\newcommand\TitleFont{\Large\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\TitleFont{\large\bf}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\HeadFont}
%    This macro contains the font changing command issued before
%    typeseting the running head line.
%    \begin{macrocode}
\newcommand\HeadFont{\sf\fontshape{sl}\selectfont}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\HeadFont{\sl}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\FootFont}
%    This macro contains the font changing command issued before
%    typeseting the running foot line.
%    \begin{macrocode}
\newcommand\FootFont{\footnotesize\sf\fontshape{sl}\selectfont}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\FootFont{\footnotesize\sl}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\PagenoFont}
%    This macro contains the font changing command issued before
%    typeseting the page number.
%    \begin{macrocode}
\newcommand\PagenoFont{\sf}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\PagenoFont{\rm}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\NewpageThreshold}
%    The macro \verb|\NewpageThreshold| is used to determine how much
%    space is needed on a page to start a new article. If less space
%    is left then the next article is started on the next page.
%    \begin{macrocode}
\newcommand\NewpageThreshold{100pt}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\HeadRuleDepth}
%    This macro contains the depth of the line between the running
%    head and the main body of text.
%    \begin{macrocode}
\newcommand\HeadRuleDepth{0pt}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\HeadRuleDepth{0.1pt}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\FootRuleDepth}
%    This macro contains the depth of the line between the running
%    foot and the main body of text.
%    \begin{macrocode}
\newcommand\FootRuleDepth{0pt}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\FootRuleDepth{0.1pt}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ContentsParSkip}
%    This macro contains the \verb|parskip| used for the table of
%    contents.
%    \begin{macrocode}
\newcommand\ContentsParSkip{1pt}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Size Changing Commands and Mathematics}
%
%    The size changing commands \verb|\small| and \verb|\footnotesize|
%    redefine also \verb|\@listi|. This effect has to be undone.
%
%
%    \begin{macro}{\DTK@math}
%    This macro modifies the relavant parameters for typesetting
%    mathematics.
%    \begin{macrocode}
\newcommand\DTK@math{%
  \abovedisplayskip      = 4pt plus 2pt minus 1pt
  \belowdisplayskip      = \abovedisplayskip
  \abovedisplayshortskip = 2pt plus 2pt
  \belowdisplayshortskip = \abovedisplayshortskip
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\@normalsize}
%    This is an internal size changing command. We save the old
%    definition in \verb|\DTK@@normalsize| and redefine it. After the
%    old definition is used some sizes are changed to a smaller value.
%    \begin{macrocode}
\let\DTK@@normalsize=\@normalsize
\def\@normalsize{%
  \DTK@@normalsize
  \DTK@math
  \let\@listi=\@listI}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\normalsize}
%    This is a size changing command. We save the old
%    definition in the macro \verb|\DTK@normalsize| and redefine
%    it. After the old definition is used some sizes are changed to a
%    smaller value.
%    \begin{macrocode}
\let\DTK@normalsize=\normalsize
\renewcommand\normalsize{%
  \DTK@normalsize
  \DTK@math
  \let\@listi=\@listI}
\normalsize
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\small}
%    This is a size changing command. We save the old
%    definition in \verb|\DTK@small| and redefine it. After the
%    old definition is used some sizes are changed to a smaller value.
%    \begin{macrocode}
\let\DTK@small=\small
\renewcommand\small{%
  \DTK@small
  \DTK@math
  \let\@listi=\@listI}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\footnotesize}
%    This is a size changing command. We save the old
%    definition in the macro \verb|\DTK@footnotesize| and redefine
%    it. After the old definition is used some sizes are changed to a
%    smaller value.
%    \begin{macrocode}
\let\DTK@footnotesize=\footnotesize
\renewcommand\footnotesize{%
  \DTK@footnotesize
  \DTK@math
  \let\@listi=\@listI}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Path}
%    \changes{1.3}{1997/01/28}{Macro added.}
%    This macro can be used to typeset paths to network sources like
%    ftp directories or URLs as well as email addresses. The argument
%    is typeset in a teletype font. Underscores and tildes are treated
%    as ordinary characters. Linebreaking is enabled after certain
%    special characters without inserting a hyphen.
%
%    Unfortunately this macro is fragile.
%    \begin{macrocode}
\begingroup
\gdef\Path@SepI{/""}
\gdef\Path@SepII{\symbol{92}""}
\gdef\Path@SepIII{:""}
\catcode`\/=13
\catcode`\:=13
\catcode`\^=0
^catcode`\\=13
^gdef^Path{^begingroup
  ^catcode`^/=13
  ^catcode`^\=13
  ^catcode`^:=13
  ^catcode`^~=12
  ^catcode`^$=12 %$
  ^catcode`^_=12
  ^catcode`^#=12
  ^let/=^Path@SepI
  ^let\=^Path@SepII
  ^let:=^Path@SepIII
  ^@Path}
^gdef^@Path#1{^texttt{#1}^endgroup}
^endgroup
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Logical Markup}
%
%    One of the advantages of \LaTeX\ is the possiblity to use logical
%    markup. For this purpose several markup macros are provided.
%    Unfortunately the macros provided are not sufficient in several
%    situations. Thus this class provides some additional markup
%    macros to come closer to the ideal situation.
%
%    \begin{macro}{\File}
%    This macro is intended to be used for typesetting file names.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\File[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Package}
%    This macro is intended to be used for typesetting package names.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Package[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Program}
%    This macro is intended to be used for typesetting program names.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Program[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Command}
%    This macro is intended to be used for typesetting command names.
%    For instance command names are relevant when talking about Unix
%    commands.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Command[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Macro}
%    This macro is intended to be used for typesetting macro names.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Macro[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Environment}
%    This macro is intended to be used for typesetting environment names.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Environment[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Email}
%    This macro is intended to be used for typesetting email addresses.
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Email[1]{\texttt{#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CTANurl}
%% hv 2006-08-11
%    Use this macro instead of \verb+\url+ for references to the \CTAN.
%    It uses the \verb+\href+ and \verb+\nolinkurl+ from the package \Package{hyperref}
%    or alternative the \Package{url} and an empty \Command{href}, if hyprref isn't loaded.
%    An example for a reference is \verb+\CTANurl{graphics/pstricks/}+: \CTANurl{graphics/pstricks/}
\providecommand*{\nolinkurl}{\url}
\providecommand*{\href}[1]{}
\newcommand*{\CTANurl}[1]{%
  \href{ftp://ftp.ctan.org/tex-archive/#1}{\nolinkurl{CTAN:#1}}%
}
%    \end{macro}
%
%    \begin{macro}{\Acronym}
%    This macro is intended to be used for typesetting acronyms. It is
%    highly recommended to use this macro sparsingly
%    \changes{1.7}{2001/11/04}{macro added.}
%    \begin{macrocode}
\providecommand\Acronym[1]{\textsc{#1}}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{List Making Environments}
%
%    The list making environments \verb|description|, \verb|itemize|,
%    and \verb|enumerate| are adapted to use less vertical space. This
%    is mainly done by resetting \verb|\parsep|, \verb|\itemsep|, and
%    \verb|\topsep|.
%
%    The environments \verb|itemize| and \verb|enumerate| use the
%    macros \verb|@listi|, \verb|@listii|, etc. Thus it is sufficient
%    to redefine those macros.
%
%    \begin{macrocode}
\def\@listI{%
  \leftmargin = \leftmargini
  \parsep     = \parskip
  \topsep     = 0pt plus 2pt
  \itemsep    = 0pt plus 2pt}
%    \end{macrocode}
%
%    \begin{macrocode}
\let\@listi=\@listI
%    \end{macrocode}
%
%    \begin{macrocode}
\def\@listii{%
  \leftmargin = \leftmarginii
  \labelwidth = \leftmarginii
  \advance   \labelwidth by-\labelsep
  \parsep     = \parskip
  \topsep     = 0pt plus 2pt
  \itemsep    = 0pt plus 2pt}
%    \end{macrocode}
%
%    \begin{macrocode}
\def\@listiii{%
  \leftmargin = \leftmarginiii
  \labelwidth = \leftmarginiii
  \advance   \labelwidth by-\labelsep
  \partopsep  = 1pt plus 0pt minus 1pt
  \parsep     = \parskip
  \topsep     = 0pt plus 2pt
  \itemsep    = 0pt plus 2pt}
%    \end{macrocode}
%    We activate the defaults.
%    \begin{macrocode}
\@listi
%    \end{macrocode}
%
%    For some reason \verb|@listi| is redefined in \verb|small| and
%    \verb|\footnotesize|. Thus we have to take care to undo the
%    changes made there. For this purpose we save the old definitions
%    and restore the intended meaning of \verb|\@listi| after calling
%    the old macro.
%
%
%    \begin{macrocode}
\renewcommand\labelitemi{$\m@th\circ$}
\renewcommand\labelitemii{$\m@th\triangleright$}
\renewcommand\labelitemiii{$\m@th\diamond$}
\setlength\leftmargini{1.5em}
\setlength\leftmarginii{1.4em}
\setlength\leftmarginiii{1.3em}
\setlength\leftmarginiv{1.2em}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\labelitemi{$\m@th\bullet$}
\renewcommand\labelitemii{\bf --}
\renewcommand\labelitemiii{$\m@th\ast$}
\setlength\leftmargini{2.5em}
\setlength\leftmarginii{2.2em}
\setlength\leftmarginiii{1.87em}
\setlength\leftmarginiv{1.7em}
%</1995>
%<*class>
%    \end{macrocode}
%
%    \begin{environment}{description}
%    To get things smaller we completely redefine the description
%    environment. Nevertheless we make use of the old label formatting
%    macro.
%    \begin{macrocode}
\renewenvironment{description}{%
  \begin{list}{}{%
    \labelwidth = 0pt
    \itemindent = -\leftmargin
    \parsep     = \parskip
    \topsep     = 0pt plus 2pt
    \itemsep    = 0pt plus 2pt
    \let\makelabel=\descriptionlabel}%
  }{\end{list}}
%    \end{macrocode}
%    \end{environment}
%
%    \begin{macro}{descriptionlabel}
%
%    \begin{macrocode}
\renewcommand\descriptionlabel[1]{%
  \hspace\labelsep{\normalsize\it #1}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\descriptionlabel[1]{\hspace\labelsep \bf #1}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{environment}{quotation}
%    Since the whole journal does not use parindent we make the
%    quotation environment the same as the quote environment.
%    \begin{macrocode}
\renewenvironment{quotation}{%
  \list{}{\rightmargin\leftmargin}%
  \item\relax
}{\endlist}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewenvironment{quotation}{%
  \list{}{\listparindent 1.5em
    \itemindent\listparindent
    \rightmargin\leftmargin\parsep \z@ plus\p@}%
  \item\relax
}{\endlist}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{environment}
%
%    \begin{environment}{roll}
%    We add a new type of list making environment. The \verb|roll|
%    does not indent per default but just typesets the argument of the
%    \verb|\item| macro in boldface. It has one optional argument
%    which can be used to specify the amount of indentation desired.
%
%    \begin{macrocode}
\newenvironment{roll}%
  {\@ifnextchar[{\r@ll}{\r@ll[0pt]}}%
  {\end{list}}
%    \end{macrocode}
%
%    \begin{macrocode}
\def\r@ll[#1]{\begin{list}{}{%
    \labelwidth = #1
    \leftmargin = \labelwidth
    \itemsep    = .3ex
    \let\makelabel=\rolllabel}%
  }
%    \end{macrocode}
%    \end{environment}
%
%    Typeset the label of a \verb|roll| environment.
%    \begin{macrocode}
\newcommand\rolllabel[1]{\hspace\labelsep \textbf{#1}\hfill}
%    \end{macrocode}
%
%
%    \begin{environment}{example}
%    We provide an environment for typesetting example code.
%    It is typeset in a smaller font with an indentation left and right.
%    \begin{macrocode}
\newenvironment{example}{\begin{quote}\small}{\end{quote}}
%    \end{macrocode}
%    \end{environment}
%
%
%
%
%
%    \begin{macrocode}
\long\def\@caption#1[#2]#3{\par\addcontentsline{\csname
  ext@#1\endcsname}{#1}{\protect\numberline{\csname
  the#1\endcsname}{\ignorespaces #2}}\begingroup
    \@parboxrestore
    \small
    \@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup}
%    \end{macrocode}
%
%
%    \subsection{Sectioning Commands}
%
%
%    The counter \verb|secnumdepth| determines which sectional units
%    are decorated with a number. Since we don't want sections and
%    everything below to be numbered we set this counter to 0.
%    \begin{macrocode}
\setcounter{secnumdepth}{0}
%    \end{macrocode}
%
%    All but the first article are separated by additional vertical
%    space from the preceding text. Thus we define a new boolean
%    variable to determine which article is the first one in a chapter.
%    \begin{macrocode}
\newif\ifFirstArticle
\FirstArticletrue
%    \end{macrocode}
%
%    \begin{macro}{\part}
%    This definition is used in the author version, where \verb|\part|
%    should not be used. An error message is issued instead.
%    \begin{macrocode}
\ifDTK@Author@
  \renewcommand\part{%
    \typeout{*** Parts can not be used in single articles.}}
\else
%    \end{macrocode}
%
%    A part is aligned to the next full page. A special page style is
%    used on a first page of a part. The macro \verb|\part| has one
%    ordinary argument which constitutes the main title of the part.
%    This argument can be preceeded by an optional argument---enclosed
%    in brackets. This first optional argument is used as the running
%    head. If it is missing the main title is used instead.
%
%    The main argument can be followed by another optional argument.
%    This second optional argument is the subtitle of the part.
%    If none is given then the empty default is used instead.
%    The second optional argument is an enhancement compared to the
%    original definition of parts in \LaTeX.
%
%    \begin{macrocode}
  \renewcommand\part{%
    \clearpage
    \thispagestyle{part}%
    \FirstArticletrue
    \Advance@Label@Prefix
    \@ifstar{\part@star{chapter}}{\part@star{part}}}
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\part@star}
%    If the next character is a \verb|[| then the part macro has an
%    optional argument.
%    \begin{macrocode}
\newcommand\part@star[1]{%
  \@ifnextchar[{\part@optional{#1}}{\part@normal{#1}}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\part@optional}
%    This macro treats the case that the part macro has an optional
%    argument.  This optional argument is used in the running head and
%    the table of contents.
%    \begin{macrocode}
\def\part@optional#1[#2]#3{%
  \markboth{#2}{#2}%
  \addcontentsline{toc}{#1}{#2}%
  \@ifnextchar[{\part@subtitle{#3}}{\part@nosubtitle{#3}}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\part@normal}
%    This macro treats the case that the part has no optional
%    argument.  In this case the title itself is used in the head and
%    in the table of contents.
%    \begin{macrocode}
\newcommand\part@normal[2]{%
  \markboth{#2}{#2}%
  \addcontentsline{toc}{#1}{#2}%
  \@ifnextchar[{\part@subtitle{#2}}{\part@nosubtitle{#2}}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\part@subtitle}
%    This macro treats the case that the part has an optional
%    argument for a subtitle.
%    \begin{macrocode}
\def\part@subtitle#1[#2]{\TopArt{#1}{\\#2}\bigskip\par}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\part@nosubtitle}
%    This macro treats the case that the part has no optional
%    argument for a subtitle.
%    \begin{macrocode}
\newcommand\part@nosubtitle[1]{\TopArt{#1}{}\bigskip\par}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TopArt}
%    This macro is used to generate the layout of the beginning of a
%    part. It takes two arguments. The first argument is the title of
%    the part and the second argument is its subtitle. If the subtitle
%    is not empty then it is started by \verb|\\|.
%    \begin{macrocode}
\newcommand\TopArtRule{2pt}
\newcommand\TopArt[2]{%
  \begin{minipage}{\textwidth}\parskip=0pt\parindent=0pt
    \null\vspace{18pt}\par\raggedright\large\sf
    {\huge\sf #1}\\[-.5ex]\rule{\textwidth}{\TopArtRule}%
    \vspace{2pt} #2
  \end{minipage}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\TopArt[2]{%
  \begingroup
    \unitlength = 1pt
    \@tempcnta  = \textwidth
    \divide\@tempcnta by \unitlength
    \framebox(\@tempcnta,38){\parbox{.95\textwidth}{%
        \begin{center}{\large\bf #1}#2 \end{center}}}
  \endgroup}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\chapter}
%    In the author version of this class no chapters are allowed. They
%    are activated when the option \verb|full| is given to the
%    class/style. Otherwise an error message is printed.
%    \begin{macrocode}
\ifDTK@Author@
  \renewcommand\chapter{%
    \typeout{*** Chapters can not be used in single articles.}}
\else
%    \end{macrocode}
%
%    The appearance of a chapter is the same as the appearance of a
%    section. Additionally a line is added to the table of contents
%    and the headline is set appropriately.
%
%    Since we want to deal with optional arguments and star variants
%    things are becoming a little bit more complicated. I don't know
%    if it is worth the effort. Maybe nobody will ever use this
%    feature anyhow.
%    \begin{macrocode}
  \renewcommand\chapter{%
    \@ifnextchar*{\chapter@star}{%
      \@ifnextchar[{\chapter@optional}{\chapter@normal}}}
\fi
%    \end{macrocode}
%    Ignore any number of stars. Well this may be to harsh but I think
%    this is enough.
%    \begin{macrocode}
\def\chapter@star*{\chapter}
%    \end{macrocode}
%    Provide a default for the optional argument.
%    \begin{macrocode}
\def\chapter@normal#1{\chapter@optional[#1]{#1}}
%    \end{macrocode}
%    Now do the whole job.
%    \begin{macrocode}
\def\chapter@optional[#1]{%
  \typeout{#1}%
  \Advance@Label@Prefix
  \addcontentsline{toc}{chapter}{#1}%
  \markboth{#1}{#1}%
  \FirstArticletrue
  \@startsection{chapter}{0}{\z@}{-1ex plus-1ex minus
    -.2ex}{.5ex plus.2ex}{\ChapterFont}*%
  }
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\section}
%    The section is redefined to use less vertical space than the
%    original definition.
%
%    \begin{macrocode}
\renewcommand\section{\@startsection{section}{1}{\z@}{%
    -2ex plus-1ex minus-.2ex}{.5ex plus.2ex}{\SectionFont}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\section{\@startsection{section}{1}{\z@}{%
    -1ex plus-1ex minus-.2ex}{.5ex plus.2ex}{\SectionFont}}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\subsection}
%    The subsection is redefined to use less vertical space than the
%    original definition.
%
%    \begin{macrocode}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}{%
    -2ex plus-1ex minus-.2ex}{0.75ex plus.2ex}{\SubsectionFont}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}{%
    -1ex plus-1ex minus-.2ex}{0.75ex plus.2ex}{\SubsectionFont}}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\subsubsection}
%    The subsubsection is redefined to use less vertical space than
%    the original definition.
%
%    \begin{macrocode}
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}{%
    -2ex plus-1ex minus-.2ex}{0.75ex plus.2ex}{\SubsubsectionFont}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}{%
    -1ex plus-1ex minus-.2ex}{0.75ex plus.2ex}{\SubsubsectionFont}}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\paragraph}
%    The paragraph is redefined to use less vertical space than the
%    original definition.
%
%    \begin{macrocode}
\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}{%
    0ex plus1ex minus.2ex}{-.5ex}{\SubsubsectionFont}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}{%
    1ex plus1ex minus.2ex}{-.5ex}{\SubsubsectionFont}}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\subparagraph}
%    The subparagraph is redefined to use less vertical space than the
%    original definition.
%
%    \begin{macrocode}
\renewcommand\subparagraph{\@startsection{subparagraph}{4}%
  {\parindent}{0ex plus1ex minus.2ex}{-.5ex}{\SubsubsectionFont}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\subparagraph{\@startsection{subparagraph}{4}%
  {\parindent}{1ex plus1ex minus.2ex}{-.5ex}{\SubsubsectionFont}}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{The Article Layout}
%
%
%    \begin{macro}{\keywords}
%    The macro \verb|keywords| is intended for the user to specify
%    keywords for the article. It is not used for the article itself
%    but for the reprint and the \BibTeX\ file of all articles.
%    \begin{macrocode}
\newcommand\keywords[1]{\def\DTK@keywords{#1}}
\def\DTK@keywords{}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\maketitle}
%    The title of an article is typeset together with the author
%    information.  If it is the first article in this chapter then
%    additional vertical space is added.
%
%    The title is added to the table of contents and the headline is
%    adjusted appropriately.
%
%    The macro \verb|\NewpageThreshold| is used to determine how much
%    space is needed aon a page to start a new article. If less space
%    is left then the next article is started on the next page.
%
%    Now we can start to typeset the head of an article and perform
%    all tasks required in this situation.
%
%    \begin{macrocode}
\renewcommand\maketitle{%
%    \end{macrocode}
%
%    If we are not in a complete journal then we use a different page style
%    for the first page. Thus it is possible to use this class to typeset
%    preprints and get a better layout of the first page.
%    \begin{macrocode}
  \ifDTK@Author@ \thispagestyle{part}\fi
%    \end{macrocode}
%
%    Now we have to ensure that there is enough space left on this page to
%    start a new article. If there isn't enough space we start the article on
%    the next page.
%    \changes{1.5}{2001/04/25}{Bugfix: constant replaced by macro.}
%    \begin{macrocode}
  \ifdim\DTKtitle@skip>0pt\vspace{\DTKtitle@skip}\fi
  \begingroup
    \dimen0=\vsize
    \advance\dimen0 by -\pagetotal
    \ifdim\dimen0<\NewpageThreshold
      \newpage
      \global\FirstArticletrue
    \fi
  \endgroup
%    \end{macrocode}
%
%    The namespace for labels has to be switched. This is done by
%    calling the macro \verb|\Advance@Label@Prefix|.
%    \begin{macrocode}
  \Advance@Label@Prefix
%    \end{macrocode}
%
%    We encapsulate the title and author information in a minipage to avoid a
%    pagebreak in beween (maybe not necessary). Then we draw a line to
%    separate the article from the previous one. The line is required if the
%    boolean variable \verb|FirstArticle| is true. This variable is set
%    afterwards.
%    \begin{macrocode}
  \begingroup
    \begin{minipage}{\textwidth}
      \ifFirstArticle
        \global\FirstArticlefalse
        \vskip 3pt
      \else
        \DTKtitle@sep
      \fi
%    \end{macrocode}
%
%
%    \begin{macrocode}
      \setcounter{footnote}0
%    \end{macrocode}
%
%    Now we insert the title and the author. The title is also put into the
%    table of contents. The running head is adjusted.
%    \begin{macrocode}
      \@flushglue=0pt plus .3\textwidth\relax
      \raggedright
      \TitleFont
      \spaceskip=\fontdimen2\font\relax
      \xspaceskip=\fontdimen7\font\relax
      \@title
      \ifx\@author\@empty\else
        \bigskip\par
        \AuthorFont\@author
      \fi
    \end{minipage}%
    \@thanks
    \let\thanks\@gobble
    \addcontentsline{toc}{chapter}{\@title}%
    \markboth{\@title}{\@title}%
  \endgroup
%    \end{macrocode}
%
%    Finally we rest certain values and insert some space to the beginning of
%    the article.
%    \begin{macrocode}
  \let\@title=\@empty
  \let\@author=\@empty
  \let\@thanks=\@empty
  \setcounter{figure}0
  \setcounter{table}0
  \setcounter{equation}0
%  \setcounter{footnote}0
  \medskip\par}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DTKtitle@skip}
%
%    \begin{macrocode}
\newcommand\DTKtitle@skip{12pt}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\DTKtitle@skip{0pt}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DTKtitle@sep}
%
%    \begin{macrocode}
\newcommand\DTKtitle@sep{\vspace{32pt plus 8pt minus 16pt}}
%    \end{macrocode}
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\DTKtitle@sep{\rule{\textwidth}{.4pt}%
  \vskip 14pt plus 8pt minus 12pt}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%
%    Several authors are separated by \verb|\and|. Here is a first
%    approximation to deal with this case.
%
%    \begin{macrocode}
\renewcommand\and{, }
%    \end{macrocode}
%
%    We provide default values for the author, the title and the
%    footnote of the title. All of them are empty.
%    \begin{macrocode}
\let\@title=\@empty
\let\@author=\@empty
\let\@thanks=\@empty
%    \end{macrocode}
%
%    \begin{environment}{abstract}
%    The abstract is typeset in a smaller font indented left and right.
%    The use of the quote environment ensures that the abstract can be
%    broken at the end of the line.
%
%    \begin{macrocode}
\newenvironment{abstract}{%
  \begin{quote}\small
    }{%
  \end{quote}\medskip\par}
%    \end{macrocode}
%    \end{environment}
%
%
%    \subsection{Numbering}
%
%    The numbering is done on a global basis. No chapter numbers are
%    prepended. Especially since none are used at all. This is just
%    like in the article class.
%
%    \begin{macrocode}
\renewcommand\thefigure{\arabic{figure}}
\renewcommand\thetable{\arabic{table}}
\renewcommand\theequation{\arabic{equation}}
%    \end{macrocode}
%
%
%    \subsection{Labels}
%
%    Labels have to be used on an per article basis for this purpose
%    we use a macro to hold the prefix for the labels. This prefix is
%    prepended whenever something is done with the labels.
%
%    The prefix is constructed from a numeric counter. This counter is%    allocated and initialized. Maybe I could live without this
%    counter but this way the labels look nicer (if you ever see them).
%    \begin{macrocode}
\newcount\DTL@label
\DTL@label=0
%    \end{macrocode}
%
%    \begin{macro}{\Advance@Label@Prefix}
%    This macro is expanded whenever a new module is entered. It has
%    to take care that a new and unique prefix string for the labels
%    is generated and stored in the macro \verb|\Label@Prefix|.
%    \begin{macrocode}
\newcommand\Advance@Label@Prefix{%
  \advance\DTL@label 1
  \xdef\Label@Prefix{module \the\DTL@label:}}
%    \end{macrocode}
%    \end{macro}
%
%    The label prefix has to be initalized. The easiest way to perform
%    this task is touse the macro defined above.
%    \begin{macrocode}
\Advance@Label@Prefix
%    \end{macrocode}
%
%    Sometimes it is desirable to use labels in the old
%    sense. I.e. without the module system. For this purpose we keep
%    the old definitions of the macros \verb|\ref|, \verb|\label|, and
%    \verb|\pageref| under the new names \verb|\Ref|, \verb|\Label|, and
%    \verb|\Pageref| respectivly.
%    \begin{macrocode}
\let\Ref=\ref
\let\Label=\label
\let\Pageref=\pageref
%    \end{macrocode}
%
%    \begin{macro}{\ref}
%    The module prefix is prepended before the original \verb|\ref|
%    macros is used.
%    \begin{macrocode}
\renewcommand\ref[1]{\Ref{\Label@Prefix:#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\label}
%    The module prefix is prepended before the original \verb|\label|
%    macros is used.
%    \begin{macrocode}
\renewcommand\label[1]{\Label{\Label@Prefix:#1}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\pageref}
%    The module prefix is prepended before the original \verb|\pageref|
%    macros is used.
%    \begin{macrocode}
\renewcommand\pageref[1]{\Pageref{\Label@Prefix:#1}}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Bibliography}
%
%    \begin{macro}{\thebibliography}
%    Instead of using a \verb|\chapter*| to start a bibliography we
%    use a \verb|\section*|. Thus the bibliography should not appear
%    in the table of contents.
%    \changes{1.8}{2002/04/01}{typeset raggedright.}
%    \begin{macrocode}
\renewcommand\thebibliography[1]{%
  \section*{\refname}%
  \list{[\arabic{enumi}]}{%
    \settowidth\labelwidth{[#1]}%
    \leftmargin\labelwidth
    \advance\leftmargin\labelsep
    \usecounter{enumi}}
  \def\newblock{\hskip .11em plus .33em minus .07em}
  \sloppy\clubpenalty4000\widowpenalty4000
  \sfcode`\.=1000\relax\DTK@bibliography@rightskip}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DTK@bibliography@rightskip}
%
%    \changes{1.8}{2002/04/01}{macro added.}
%    \begin{macrocode}
\newcommand\DTK@bibliography@rightskip{\rightskip=0pt plus 2em}
%</class>
%<*2002>
\newcommand\DTK@bibliography@rightskip{}
%</2002>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DTK@bibliography}
%    This macro is used to overwrite the macro \verb|\bibliography|
%    when the complete journal is typeset.
%    \begin{macrocode}
\newcommand\DTK@bibliography[1]{
  \InputIfFileExists{#1.bbl}{}{\typeout{--- File #1.bbl not found.}}}
%    \end{macrocode}
%    \end{macro}
%
%    \changes{1.3}{1997/01/28}{Forcing the bibstyle.}
%    We switch to the default bib style.
%
%    \begin{macrocode}
\bibliographystyle{dtk}
%    \end{macrocode}
%
%
%    \subsection{Footnotes}
%
%    This is just my personal taste. I have incorporated my
%    fnblock.sty. This style option arranges things in a way that
%    footnotes do not go beneath the footnotemarks. In addition they
%    can be indented at the right side.
%
%    Both indentation at both sides can be configured with the
%    following two macros:
%    \begin{macrocode}
\newcommand\DTK@fnrightmargin{0em}
\newcommand\DTK@fnleftmargin{1em}
%    \end{macrocode}
%
%    \begin{macro}{\@makefntext}
%    And now we make the footnote to behave as desired.
%    \changes{1.4}{2000/08/06}{Don't let footnote line and footnote
%    text be broken across pages. Fix problem with footnotemarks.}
%    \begin{macrocode}
\long\def\@makefntext#1{%
  \@nobreaktrue
  \begin{list}{}{%
      \rightmargin=0pt%
      \parsep=0.333\baselineskip plus 2pt
      \leftmargin=\DTK@fnleftmargin}
  \item\mbox{}%
     \llap{\@textsuperscript{\normalfont\@thefnmark}\kern1pt}%
     #1%
  \end{list}}
%</class>
%<*1995>
\long\def\@makefntext#1{\parindent 1em\noindent
            \hbox to 1.8em{\hss$\m@th^{\@thefnmark}$}#1}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\@textsuperscript}
%    Define \verb|\@textsuperscript| for older LaTeX(2e) versions.
%    The macros has been copied from ``latex.ltx'' <1999/12/01>.
%    \changes{1.4}{2000/08/12}{Macro introduced to fix problems with
%            footnotes in minipages.}
%    \begin{macrocode}
\@ifundefined{@textsuperscript}{%
  \def\@textsuperscript#1{%
    {\m@th\ensuremath{^{\mbox{\fontsize\sf@size\z@#1}}}}}
}{}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\footnoterule}
%    The rule separating main text and footnotes is defined.
%    \begin{macrocode}
\renewcommand\footnoterule{%
  \kern-3\p@
  \hrule\@width0.333\columnwidth
  \kern2.6\p@}
%</class>
%<*1995>
\renewcommand\footnoterule{\kern-3\p@
  \hrule width .4\columnwidth
  \kern 2.6\p@}
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Defining Page Styles}
%
%    \subsubsection{The Page Style ``plain''}
%
%    The page style plain provides a head line and a foot line.  The
%    page number is printed in the outer corner of the head line.  The
%    inner part of the head line contains the title of the current
%    article.
%
%    The foot line contains the name and number of the current journal
%    flushed towards the inner border of the page.
%
%    The head line and the footline are separated by a bar from the
%    main body of text.
%
%    \begin{macrocode}
\renewcommand\ps@plain{%
  \let\@mkboth=\@gobbletwo
  \let\chaptermark=\@gobble
  \let\sectionmark=\@gobble
  \let\subsectionmark=\@gobble
  \def\@oddhead{\vbox{\hbox to \textwidth{%
        \let\\=\relax
        \HeadFont \rightmark \hfil\PagenoFont\thepage}\kern 3pt
      \ifdim\HeadRuleDepth>0pt \hrule depth\HeadRuleDepth\fi}}%
  \def\@evenhead{\vbox{\hbox to \textwidth{%
        \let\\=\relax
        \PagenoFont \thepage\hfil\HeadFont \leftmark}\kern 3pt
      \ifdim\HeadRuleDepth>0pt \hrule depth\HeadRuleDepth\fi}}%
\iffalse% RN 2005-01-17
  \def\@oddfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{\FootFont \footmark\hfil\null}}}%
  \def\@evenfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{\null\hfil\FootFont \footmark}}}%
\else
  \def\@oddfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{%
        \FootFont \footmark\hfil\DTK@corr@version\null}}}%
  \def\@evenfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{%
        \null\FootFont\DTK@corr@version\hfil \footmark}}}%
\fi
}
%    \end{macrocode}
%
%
%    \subsubsection{The Page Style ``headings''}
%
%    The page style headings is an alias to the page style plain.
%    \changes{1.4}{2000/09/05}{definition for pagestyle headings added.}
%    \begin{macrocode}
\let\ps@headings\ps@plain
%    \end{macrocode}
%
%    \subsubsection{The Page Style ``part''}
%
%    The page style \verb|part| contains the same foot as the page style
%    \verb|plain|. The head line is empty.
%
%    This style is used when a new part is started. It can be
%    configured by redefining the macros \verb|FootRuleDepth|,
%    \verb|\FootFont|, and \verb|\PagenoFont|.
%
%    \begin{macrocode}
\newcommand\ps@part{%
  \let\@mkboth=\@gobbletwo
  \let\chaptermark=\@gobble
  \let\sectionmark=\@gobble
  \let\subsectionmark=\@gobble
  \let\@oddhead=\@empty
  \let\@evenhead=\@empty
\iffalse% RN 2005-01-17
  \def\@oddfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{\FootFont \footmark\hfil\null}}}%
  \def\@evenfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{\null\hfil\FootFont \footmark}}}%
\else
  \def\@oddfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{%
        \FootFont \footmark\hfil\DTK@corr@version\null}}}%
  \def\@evenfoot{\vbox{%
      \ifdim\FootRuleDepth>0pt \hrule depth\FootRuleDepth \fi
      \kern 5pt \hbox to \textwidth{%
        \null\FootFont \DTK@corr@version\hfil\footmark}}}%
\fi
}
%    \end{macrocode}
%
%    The default page style is plain. This has been set by the book
%    style before. If we want our changes to take effect we have to
%    reinitialize the page style.
%
%    \begin{macrocode}
\pagestyle{plain}
%    \end{macrocode}
%
%
%
%    \subsection{The Layout of the Titlepage}
%
%    \begin{macro}{\DieTeXnischeKomoedie}
%    This macro produces the title page. It has three arguments. The
%    first argument is the number of the volume. This value is also
%    stored in the macro \verb|\volume| for later use. The second
%    argument is the number of the year and the third argument is the
%    date when this volume is released. The date is given as month and
%    year.
%
%    The appearance of the cover page is determined by the macro
%    \verb|\CoverArt|. This can be redefined to get a different cover
%    page.
%    \begin{macrocode}
\ifDTK@Author@
  \AtEndOfClass{%\show\DTK@jobname
  \InputIfFileExists{\DTK@jobname.inf}{%
  \renewcommand\volume{\Volume}}{}}%
\else
  \newcommand\DieTeXnischeKomoedie[3]{%
    \thispagestyle{empty}%
    \gdef\Volume{#1}%
    \xdef\volume{\Volume}%???
    \gdef\DTKedition{#2}%
    \gdef\DTKdate{#3}%
    \immediate\openout\@unused \jobname.inf\relax
    \immediate\write\@unused{%
      \string\gdef\string\Volume{#1}^^J%
      \string\gdef\string\DTKedition{#2}^^J%
      \string\gdef\string\DTKdate{#3}%
    }%
    \immediate\closeout\@unused
    \iffalse% RN 2005-02-20; unnoetig, da localer \jobname usw.
    \global\let\bibliography=\DTK@bibliography
    \global\let\bibliographystyle=\@gobble
    \fi
    \CoverArt{#1}{#2}{#3}%
    \newpage}
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt}
%
%    This macro implements the layout of the cover page of
%    DTK. It can be redefined to get a different layout.
%
%    \changes{1.4}{2000/08/06}{Special effects via the packages
%    graphicx and color instead of PostScript specials.}
%    \changes{1.7}{2001/11/02}{Correction of the size of the number on
%    the title page for volumes after 1999.}
%    \begin{macrocode}
%<*1995|1996|1997|1998|1999>
\newfont\CoverTitleFont{cmr17 scaled \magstep 5}
\newfont\CoverNumberFont{cmr17 scaled 3583}
%</1995|1996|1997|1998|1999>
\newcommand\CoverArt[3]{%
  \ifx\CoverTitleFont\@undefined
  \newfont\CoverTitleFont{ecrm1700 scaled \magstep 5}
  \fi
  \ifx\CoverNumberFont\@undefined
  \newfont\CoverNumberFont{ecrm1700 scaled 2986}
  \fi
  \vspace*{-34pt}\hfill
  \setbox\@tempboxa=\hbox to \textheight{\null\hfill\CoverTitleFont
    \journalname\hfill\null}%
  \@tempdimb=\ht\@tempboxa
  \advance\@tempdimb by\dp\@tempboxa
  \hbox to\@tempdimb{%
    \vbox to\wd\@tempboxa{%
      \vskip\wd\@tempboxa
      \vss\rotatebox{90}{\box\@tempboxa}}\hss} \ %
  \rule{\CoverArt@barwidth}{\textheight}
  \begin{minipage}[b]{.7\textwidth}\raggedright
    \rule{1em}{0pt}%
    \dimen2=\textwidth\advance\dimen2-1em
    \parbox{\dimen2}{\CoverArt@font
      DANTE\\
      Deutschsprachige\\
      Anwendervereinigung
      \TeX\ \eV}\\[1ex]
    \dimen3=\textwidth\advance\dimen3-\CoverArt@gap
    \hfill\rule{\dimen3}{\CoverArt@linewidth}%
    \\[-\baselineskip]\null\hspace{1em}%
    {\CoverArt@small\cover@sub{#1}{#2}{#3}}%
    \\[-\baselineskip]\rule{0pt}{.617647\textheight}%
    \CoverNumberFont
    \null\hfill
    \makebox(0,0)[br]{%
      \textcolor{CoverArt@grey}{%
        \CoverArt@strip@no #1;\hspace{1pt}%
      }}%
  \end{minipage}%
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{cover@sub}
%    Internal macro for typesetting the volume information on the
%    cover--front and back matter.
%    \changes{1.7}{2001/31/12}{Extracted to allow configuration for
%    "`Die \TeX nichen Kontakte"'}
%    \begin{macrocode}
\newcommand\cover@sub[3]{%
 #2. Jahrgang\quad Heft #1\quad #3%
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{CoverArt@grey}
%    Define the color for the number on the cover.
%    \changes{1.4}{2000/08/06}{Color definition via color.sty}
%    \begin{macrocode}
\ifDTK@Author@\else
  \definecolor{CoverArt@grey}{gray}{.8}
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt@strip@no}
%    Extract the relevant part from the number of the issue.
%    \changes{1.7}{2001/11/02}{Correction of the macro to deal with
%    four digit numbers instead of striping two digits. This is used
%    since the year 2000.}
%    \begin{macrocode}
\def\CoverArt@strip@no#1/#2;{#1\raisebox{0.35ex}{\CoverTitleFont/}#2}
%<*1995|1996|1997|1998|1999>
\def\CoverArt@strip@no#1/#2#3#4#5;{%
  #1\raisebox{0.35ex}{\CoverTitleFont/}#4#5}
%</1995|1996|1997|1998|1999>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt@linewidth}
%
%    This macro determines the thickness of the horizontal rule
%    separating the publisher from the edition information.
%    \begin{macrocode}
\newcommand\CoverArt@linewidth{0pt}%{1.2pt}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt@barwidth}
%
%    \begin{macrocode}
\newcommand\CoverArt@barwidth{2.41pt}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt@font}
%
%    \begin{macrocode}
\newcommand\CoverArt@font{\Large\raggedleft}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt@small}
%
%    \begin{macrocode}
\newcommand\CoverArt@small{\footnotesize}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\CoverArt@gap}
%
%    \begin{macrocode}
\newcommand\CoverArt@gap{2em}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsubsection{Redefinitions}
%
%    \begin{macrocode}
%</class>
%<*1995>
\renewcommand\CoverArt[3]{
  \ifx\CoverTitleFont\@undefined
    \newfont\CoverTitleFont{cmr17 scaled \magstep 5}%
  \fi
  \begin{center}
    {\LARGE DANTE\\[14pt]
     \Large Deutschsprachige Anwendervereinigung \TeX\ \eV}%
    \\\rule{\textwidth}{2pt}\par\vfill
    \CoverTitleFont    Die
    \\[22pt]       \TeX nische
    \\[22pt]       Kom{\"o}die
    \par\vfill\rule{\textwidth}{2pt}\\[4pt]\large
    Heft #1\hfill #2.\ Jahrgang\hfill #3
    \normalsize
  \end{center}\vspace*{28.5pt}}
%</1995>
%    \end{macrocode}
%
% \subsection{Special code for 2007 layout}
%
% \changes{1.9-pre}{2005/01/15}{Class option for 2005 added. (RN)}
% By now, the material is inserted all in one huge chunk.
% Some parts of this material probably should be moved to other places
% in the DTX file, where they belong.\\
% \mbox{(HjG 2005-02-04)}
%    \begin{macrocode}
%<*2007|2008>

\ProvidesFile{dtk07.clo}
              [2007/08/28 v0.1 dtk class option (hv)]

\renewcommand\CoverArt[3]{%
  \ifx\CoverTitleFont\@undefined
    %\newfont\CoverTitleFont{ecrm1700 scaled \magstep 5}
    %\newfont\CoverTitleFont{lmr12 scaled 2938}
    \DeclareFixedFont\CoverTitleFont{\encodingdefault}{\rmdefault}{m}{n}{41.26}%
  \fi
  \ifx\CoverNumberFont\@undefined
    %\newfont\CoverNumberFont{ecrm1700 scaled 2986}
    \DeclareFixedFont\CoverNumberFont{\encodingdefault}{\rmdefault}{m}{n}{51.66}%
  \fi
  \vspace*{-34pt}\hfill
  \setbox\@tempboxa=\hbox to \textheight{\null\hfill\CoverTitleFont
    Die \journalname\hfill\null}%
  \@tempdimb=\ht\@tempboxa
  \advance\@tempdimb by\dp\@tempboxa
  \hbox to\@tempdimb{%
    \vbox to\wd\@tempboxa{%
      \vskip\wd\@tempboxa
      \vss\rotatebox{90}{\box\@tempboxa}}\hss} \
  \rule{\CoverArt@barwidth}{\textheight}
  \begin{minipage}[b]{.7\textwidth}\raggedright
    \rule{1em}{0pt}%
    \dimen2=\textwidth\advance\dimen2-1em
    \parbox{\dimen2}{\CoverArt@font
      {\Huge\DANTE}\\
      Deutschsprachige\\
      Anwendervereinigung
      \TeX\ \eV}\\[1ex]
    \dimen3=\textwidth\advance\dimen3-\CoverArt@gap
    \hfill\rule{\dimen3}{\CoverArt@linewidth}%
    \\[-\baselineskip]\null\hspace{1em}%
    {\CoverArt@small\cover@sub{#1}{#2}{#3}}%
    \\[-\baselineskip]\rule{0pt}{.617647\textheight}%
    \CoverNumberFont
    \null\hfill
    \makebox(0,0)[br]{%
      \textcolor{CoverArt@grey}{%
        \CoverArt@strip@no #1;\hspace{1pt}%
      }}% Warum verwendet `\CoverArt@strip@no' \CoverTitleFont? RN
  \end{minipage}%
}

\PassOptionsToPackage{ngerman}{babel}
\RequirePackage{babel}
\declare@shorthand{ngerman}{"`}{\frqq}%
\declare@shorthand{ngerman}{"'}{\flqq}%
%\def@dqmacro{`}{\frqq}{\frqq}
%\def@dqmacro{'}{\flqq}{\flqq}
%
\RequirePackage{showexpl}
\lstset{language=[LaTeX]TeX}
\providecommand\lstverb{%
    \leavevmode\bgroup %
      \def\lst@boxpos{b}%
      \lsthk@PreSet\lstset{flexiblecolumns,basicstyle=\mdseries\ttfamily\normalsize,backgroundcolor={},
        breaklines=false,keywordstyle=\mdseries\ttfamily\normalsize}%
      \lsthk@TextStyle
      \@ifnextchar\bgroup{\afterassignment\lst@InlineG \let\@let@token}%
                         \lstinline@}
\providecommand*{\ctanurl}[1]{%
  \href{ftp://ftp.ctan.org/tex-archive/#1}{\nolinkurl{CTAN:#1}}%
}
%
%\endinput
%</2007|2008>
%    \end{macrocode}
%
%
%    \subsection{List of Addresses}
%
%    Addresses can be given anywhere throughout the whole
%    document. The address together with the page where it has been
%    given is stored in the index.
%
%    The list of addresses is handled by the index mechanism of
%    \LaTeX.  I (safely) assume that nobody has the desire to make an
%    index for a journal.
%
%    \begin{macro}{\address}
%    The address macro takes three arguments. The first argument is the
%    first name the second is the last name and the third is the
%    address where several lines can be included which are separated
%    by \verb|\\|.
%
%    The macro can be e.g. as follows:\\
%    \verb|\address{Gerd}{Neugebauer}%|\\
%    \verb|        {Mainzer Str. 8\\56321 Rhens}|
%
%
%    The address is given to \verb|\index| to be stored in the .idx
%    file. This file is sorted and reformatted to produce the sorted
%    list of addresses.
%
%    The problem was to get the correct (German) ordering. For this
%    purpose the \TeX{} macros which  are (normally) part of a name
%    have to be expanded properly. Unfortunately plain expansion may
%    leave braces which confuse makeindex. To get rid of these braces
%    we have to scan the tokens and transfer those tokens that are not
%    braces.
%
%    We use one big assumption. We assume that a name does not contain
%    a dollar sign. Well, it is rather unusual that mathematics is
%    part of a name.
%
%    The better solution would be a future version of makeindex which
%    is able to cope with those problems (wait and pray:-)
%    \changes{1.5}{2001/06/05}{Some magic for doublequote}
%    \begin{macrocode}
%<*class>
\chardef\DTK@cat=\the\catcode`\"
\catcode`\"=13
\newcommand\address[3]{%
  \begingroup
    \def\"##1{\@ifundefined{detex@@##1}{##1}%
      {\csname detex@@##1\endcsname}}%
    \ifcat a\noexpand"\else\let"=\"\fi
    \def\ss{ss}%
    \let\'=\relax
    \let\`=\relax
    \let\^=\relax
    \let\.=\relax
    \let\==\relax
    \let\d=\relax
    \let\b=\relax
    \let\c=\relax
    \let\v=\relax
    \let\H=\relax
    \let\t=\relax
    \let\u=\relax
    \let\~=\relax
    \def\o{o}%
    \def\O{O}%
    \def\aa{aa}%
    \def\AA{Aa}%
    \def\l{l}%
    \def\L{L}%
    \def\ae{ae}%
    \def\AE{Ae}%
    \def\oe{oe}%
    \def\OE{Oe}%
    \def\TeX{TeX}%
    \def\LaTeX{LaTeX}%
    \def\LaTeXe{LaTeX2e}%
    \let\null=\relax
    \xdef\@ddress{#2, #1}%
  \endgroup
  \begingroup
    \def\\{\string\\}%
    \ifcat a\noexpand"\else\def\"{\string"}\fi
    \def"{\string"}%
    \def\null{}%
    \expandafter\@strip\@ddress$%$
    \iffalse% RN 2005-01-15
    \index{\STRIP@*#1 #2!#3}%
    \else
    \glossary{\STRIP@*#1 #2!#3}%
    \fi
  \endgroup
}
\catcode`\"=\DTK@cat
%    \end{macrocode}
%    \end{macro}
%    For the removing of \TeX\ macros in addresses we need some
%    definitions to perform the mapping.
%    \begin{macrocode}
\let\strip@grp={
\let\strip@end=$%$
\def\@strip{\def\STRIP@{}\strip@I}
\def\strip@I{\let\strip@next=\strip@I
  \futurelet\strip@CHAR\strip@II}
\def\strip@II#1{%
  \ifx\strip@CHAR\strip@end
    \let\strip@next=\relax
  \else\ifx\strip@CHAR\strip@grp
    \strip@I #1$%$
    \let\strip@next=\strip@I
  \else\ifcat\strip@CHAR A
    \xdef\STRIP@{\STRIP@#1}%
  \else\ifcat\strip@CHAR.
    \xdef\STRIP@{\STRIP@#1}%
  \else\ifcat\strip@CHAR\space
    \xdef\STRIP@{\STRIP@ #1}%
  \fi\fi\fi\fi\fi
  \strip@next}
%    \end{macrocode}
%
%    \begin{macrocode}
\def\detex@@a{ae}
\def\detex@@o{oe}
\def\detex@@u{ue}
\def\detex@@A{Ae}
\def\detex@@O{Oe}
\def\detex@@U{Ue}
\def\detex@@s{ss}
%    \end{macrocode}
%
%    \begin{environment}{theaddresses}
%    The addresses are collected in an environment Addresses. This
%    environment is used to customize the layout of this list.
%    \changes{1.5}{2001/04/08}{raggedright added.}
%    \changes{1.7}{2001/11/03}{boxing of address items and raggedbottom added.}
%    \begin{macrocode}
\ifDTK@Author@\else
\newenvironment{theaddresses}{%
  \chapter{\addressname}\Label{addresses}
  \begingroup
    \columnsep=10pt
    \addresssize
    \def\addressitem##1##2##3{%
      \par
      \parbox{\columnwidth}{
      \textbf{##1}\hfill[\ignorespaces ##3]%
      \\ ##2}}
    \begin{multicols}{2}%
      \raggedbottom
      \raggedright
}{%
    \end{multicols}%
  \endgroup
  }
\fi
\newcommand\addresssize{\footnotesize\parskip=6pt plus 2pt minus 3pt}
%    \end{macrocode}
%
%    For older issues another definition has been used.
%    \begin{macrocode}
%</class>
%<*1995|1996>
\let\addresssize\relax
%</1995|1996>
%<*class>
%    \end{macrocode}
%    \end{environment}
%
%    \begin{macro}{\listofaddresses}
%    This macro reads the index file which is assumed to contain the
%    properly formatted list of authors. If this file does not exist
%    then a warning is printed.
%
%    \begin{macrocode}
\ifDTK@Author@
  \newcommand\listofaddresses{%
    \typeout{*** listofaddresses not supported in articles.}}
  \let\makeaddresses\relax% RN 2005-01-15
\else
  \iffalse% RN 2005-01-15
  \newcommand\listofaddresses{%
    \InputIfFileExists{\jobname.ind}{}{%
      \typeout{No file \jobname.ind.}%
      \typeout{Use the following command to create it:\space\space
        makeindex -s dtk.ist \jobname}%
      \typeout{\space}}%
  }
  \else
  \newcommand\listofaddresses{%
    \InputIfFileExists{\jobname.gls}{}{%
      \typeout{No file \jobname.gls.}%
      \typeout{Use the following command to create it:^^J%
        \@spaces makeindex -s dtk.ist -o \jobname.gls \jobname.glo}%
      \typeout{\space}}%
  }
  \let\makeaddresses\makeglossary
  \fi
\fi
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{The Table of Contents}
%
%    \begin{macro}{\tableofcontents}
%    The table of contents should appear as a page of it's own. It
%    should have an appropriate headline if it is long
%    enough. Otherwise the first page has no headline and no page
%    number.
%
%    \begin{macro}{\tableofcontents}
%    This macro produces the table of contents. It is not availlable
%    for single articles
%    \begin{macrocode}
\ifDTK@Author@
  \renewcommand\tableofcontents{%
    \typeout{*** tabelofcontents not supported in articles.}}
\else
  \renewcommand\tableofcontents{%
    \clearpage
    \thispagestyle{empty}%
    \markboth{\contentsname}{\contentsname}%
    \ContentsArt
    \begingroup
      \parskip=\ContentsParSkip
      \let\\=\relax
      \TOC@configure
      \@starttoc{toc}
    \endgroup
  }
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TOC@configure}
%    This macro can be used to redefine properties of the table of
%    contents.
%    \begin{macrocode}
\let\TOC@configure\relax
%</class>
%<*1997|1998|1999>
\def\TOC@configure{\renewcommand{\bfdefault}{bdx}}
%</1997|1998|1999>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ContentsArt}
%    This macro is used to typeset the head of the table of contents.
%    \begin{macrocode}
\newcommand\ContentsArt{%
  \vspace*{-\headheight}\vspace*{-\headsep}\vspace*{-2pt}
  \begin{minipage}{\textwidth}
    \Huge \journalname\\[2pt]%
    \rule{\textwidth}{2pt}\\[2pt]%
    \null\hfill
    \CoverArt@small
    \cover@sub{\volume}{\DTKedition}{\DTKdate}
  \end{minipage}\vspace{16pt minus 8pt}\par
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macrocode}
%</class>
%<*1995>
\ifDTK@Author@\else
  \renewcommand\ContentsArt{\part@nosubtitle{\contentsname}}
\fi
%</1995>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macrocode}
\DeclareFontShape{T1}{cmr}{bdx}{n}
     {<5><6><7><8><9><10><10.95><12>
      <14.4><17.28><20.74><24.88> ecrb10
      }{}
\DeclareFontShape{OT1}{cmr}{bdx}{n}
     {<5><6><7><8><9><10><10.95><12>
      <14.4><17.28><20.74><24.88> cmbdx10
      }{}
%    \end{macrocode}
%
%    The lines contained in the table of contents are determined by
%    the counter \verb|tocdepth|. The counter defines a level above
%    which the lines are suppressed in the table of contents.
%
%    We are only interested in chapters and parts. Chapters have level
%    0 and parts have level -1. Thus we set \verb|tocdepth| to 0.
%    \begin{macrocode}
\setcounter{tocdepth}{0}
%    \end{macrocode}
%    The layout of the lines in the table of contents is determined by
%    the macros \verb|\l@|{\em type}. Some of them are redefined next.
%
%    \begin{macro}{\l@part}
%    This macro determines the layout of the line in the table of
%    contents for parts. It simply imitates the layout of chapters
%    without additional space.
%    \changes{1.4}{2000/08/12}{Definition modified.}
%
%    \begin{macrocode}
\renewcommand\l@part[2]{%
  \addpenalty{-\@highpenalty}%
  \addvspace{0.5em plus 0pt}% space above part line
  \@tempdima 1.5em
  \begingroup
    \bf
    \advance\leftskip\@tempdima
    \hskip -\leftskip
    #1\par
    \penalty\@highpenalty
  \endgroup
  \addvspace{0.2em}%
}
%    \end{macrocode}
%
%    For older issues another definition has been used.
%    \begin{macrocode}
%</class>
%<*1995|1996>
\renewcommand\l@part[2]{%
  \addpenalty{-\@highpenalty}%
  \addvspace{0.5em plus 0pt}% space above part line
  \@tempdima 1.5em
  \begingroup
    \parindent \z@ \rightskip \@pnumwidth
    \parfillskip -\@pnumwidth
    \bf
    \leavevmode
    \advance\leftskip\@tempdima
    \hskip -\leftskip
    #1\nobreak\hfil \nobreak\hbox to\@pnumwidth{\hss #2}\par
    \penalty\@highpenalty
  \endgroup}
%</1995|1996>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\l@chapter}
%    This macro determines the layout of the line in the table of
%    contents for chapters. It simply imitates the layout of
%    sections.
%    \changes{1.4}{2000/08/12}{Definition modified.}
%
%    \begin{macrocode}
\renewcommand\l@chapter[2]{%
  \begingroup
     \vskip \z@ \@plus.2\p@
     \@afterindenttrue
     \interlinepenalty\@M
     \@tempdima 1.5em\relax % number width
     \@tempdimb 2.5em\relax % indent
     \advance\leftskip \@tempdimb
     \advance\rightskip \@tempdimb
%     \advance\leftskip \@tempdima
     \noindent\hskip -\leftskip
%     \hbox to\@tempdimb{\hbox to\@tempdima{\hss #2}\hss}%
     \hbox to\@tempdimb{#2\hss}%
     #1\par
  \endgroup}
%    \end{macrocode}
%
%    For older issues another definition has been used.
%    \begin{macrocode}
%</class>
%<*1995|1996>
\renewcommand\l@chapter{\@dottedtocline{0}{1.5em}{2.3em}}
%</1995|1996>
%<*class>
%    \end{macrocode}
%    \end{macro}
%
%    For backward compatibility modes we have defined class options.
%    If an old layout is requested via a class option then we have to
%    load now the appropriate class option file.
%    \begin{macrocode}
\iffalse% RN 2005-01-15
\@ifundefined{DTK@layout}{}{\input dtk\DTK@layout.clo}
\else
\@ifundefined{DTK@layout}{}{\input{dtk\DTK@layout.clo}}
\fi
%    \end{macrocode}
%    ??? New stuff !!!
%    \begin{macrocode}
% RN 2005-01-15
\IfFileExists{eurosans.sty}
% Reicht eigentlich nicht; die Fonts selbst müssen auch
% vorhanden sein...
{%
  \RequirePackage{eurosans}
%  ==> http://home.vr-web.de/was/x/latexeuro.pdf
%  ==> ftp://ftp.adobe.com/pub/adobe/type/win/all/eurofont.exe
%      (unzip eurofont.exe...)
% RN 2005-02-12
  %%%\AtBeginDocument{\let\texteuro\euro}
  \AtBeginDocument{%
    \DeclareTextCommandDefault{\texteuro}{\euro}}% ???
}
{%
  % Das kann jeder.
  \let\DTK@texteuro\texteuro
  \AtBeginDocument{%
    \renewcommand*\texteuro{\textsf{\DTK@texteuro}}}
}
% From: `graphics.cfg'
% Send papersize information to the output driver
\begingroup
  \chardef\x=0 %
  % check pdfTeX
  \@ifundefined{pdfoutput}{}{%
    \ifcase\pdfoutput
    \else
      \chardef\x=1 %
    \fi
  }%
  % check VTeX
  \@ifundefined{OpMode}{}{%
    \chardef\x=2 %
  }%
\expandafter\endgroup
\ifcase\x
  % default case
  \AtBeginDvi{\special{papersize=\the\paperwidth,\the\paperheight}}%
\or
  % pdfTeX is running in pdf mode
  \pdfpagewidth\paperwidth\pdfpageheight\paperheight
\else
  % VTeX is running
  \mediawidth\paperwidth\mediaheight\paperheight
\fi

% RN 2005-01-15
% Solange die lmodern-Schreibmaschinenschrift fehlerhaft ist
%  (nicht "monospaced"), nehmen wird das EC-Äquivalent. RN
\AtBeginDocument{%
  \begingroup% vielleicht noch intelligenter...
    \ttfamily
    \@tempdima\fontdimen3\font
    \advance\@tempdima\fontdimen4\font
    \ifdim\@tempdima>\z@
      \edef\@tempa{\ttdefault}\gdef\ttdefault{cmtt}%
      \ClassWarning{dtk}{%
        Font `\@tempa' is bad, changed to '\ttdefault'}%
    \fi
  \endgroup
}
% RN 2005-01-22
\RequirePackage{makeidx}
% RN 2005-01-22
% Muss evtl. noch verbessert werden?
\renewenvironment{theindex}
  {\begin{multicols}{2}[\section{\indexname}\vspace{-.5\baselineskip}]%
   \parskip\z@ \@plus .3\p@\relax
   \columnseprule \z@
   \columnsep=10pt
   \raggedbottom\raggedright
   \let\item\@idxitem}
  {\end{multicols}}
\renewcommand\@idxitem{\par\hangindent 40\p@}
\renewcommand\subitem{\@idxitem \hspace*{20\p@}}
\renewcommand\subsubitem{\@idxitem \hspace*{30\p@}}
%\renewcommand\indexspace{\par \vskip 10\p@ \@plus5\p@ \@minus3\p@\relax}
\renewcommand\indexspace{\par \vskip 6\p@ \@plus2\p@ \@minus1\p@\relax}

% 2005-02-11
\newcommand*\DTK@embedded@documentclasshook{}
\newcommand*\AtEmbeddedDocumentclass{%
  \g@addto@macro\DTK@embedded@documentclasshook}
\AtEmbeddedDocumentclass{%
%%%    \filename@parse{\protect#1}\edef\DTK@local@jobname{\filename@base}%???
%    \filename@parse{\DTK@local@jobname}%
%    \edef\DTK@local@jobname{\filename@base}%
      \edef\jobname{\DTK@local@jobname}%
}
%\show\DTK@embedded@documentclasshook
\newcommand*\DTK@embedded@begindocumenthook{}
\newcommand*\AtEmbeddedBeginDocument{%
  \g@addto@macro\DTK@embedded@begindocumenthook}
\AtEmbeddedBeginDocument{}
\newcommand*\DTK@embedded@enddocumenthook{}
\newcommand*\AtEmbeddedEndDocument{%
  \g@addto@macro\DTK@embedded@enddocumenthook}
\AtEmbeddedEndDocument{\endinput}
% RN 2005-01-22
\newcommand*\DTK@jobname{}
\ifDTK@Author@
  \edef\DTK@jobname{komoedie}
\else
  \edef\DTK@jobname{\jobname}
\fi
\newcommand*\DTK@local@jobname{}
\newcommand*\DTK@local@inputname{}
%%%\newcommand*\DTK@PSforPDF{}
\newcommand*\DTK@eat@version[1][]{\ignorespaces}
% Wie `\input', lädt aber auch komplette Dokumente. RN
\newcommand*\DTK@usepackage{}
\newcommand*\DTKinput[1]{%
  \begingroup
% RN/HjG 2005-03-23
     \filename@parse{#1}%
     \edef\DTK@local@jobname{\filename@base}%
     \@ifundefined{filename@ext}%
     {\IfFileExists{\DTK@local@jobname.ltx}%
       {\edef\DTK@local@inputname{\DTK@local@jobname.ltx}}%
       {\edef\DTK@local@inputname{\DTK@local@jobname.tex}}%
     }%
     {\edef\DTK@local@inputname{#1}}%
    \renewcommand*\documentclass[2][]{%
      %%\edef\jobname{\DTK@local@jobname}%
      %%%\let\DTK@PSforPDF\PSforPDF
      %\renewcommand\PSforPDF[2][]{}%
      %%%\let\PSforPDF\@gobble
      \DTK@embedded@documentclasshook
      \DTK@eat@version}%
    \renewcommand*\usepackage[2][]{%
      \@ifnextchar[%]
        {\DTK@usepackage{##1}{##2}}%
        {\DTK@usepackage{##1}{##2}[]}%
      }%
    \def\DTK@usepackage##1##2[##3]{%
      \edef\@tempb{\zap@space##2 \@empty}%
      \@for\@tempa:=\@tempb\do{\def\@tempb{inputenc}%
        \ifx\@tempa\@tempb
          \edef\@tempa{##1}%
          \ifx\@tempa\@empty\else\inputencoding{##1}\fi
        \else
          \ifx\@tempa\@empty\else\NeedPackage{\@tempa}%
             \RecordPackage{##1}\@tempa{##3}\DTK@local@inputname
          \fi
        \fi}}%
    \let\pagestyle\@gobble
    \let\thispagestyle\@gobble
    \let\nocite\@gobble
    \let\listfiles\relax
    \let\nofiles\relax
    \renewcommand*\AtBeginDocument[1]{%
       \typeout{\string\AtBeginDocument\space ignored!}}
    \renewcommand*\AtEndDocument[1]{%
       \typeout{\string\AtEndDocument\space ignored!}}
    \renewenvironment*{document}%
    %%%{\let\PSforPDF\DTK@PSforPDF}%
    %%%{\endinput}%
    {\DTK@embedded@begindocumenthook}%
    {\DTK@embedded@enddocumenthook}%
% RN 2005-02-19, now moved!
%    \filename@parse{#1}%
%    \@ifundefined{filename@ext}%
%    {\InputIfFileExists{#1.ltx}{}{\input{#1}}}{\input{#1}}%
    \input{\DTK@local@inputname}%
% end
  \endgroup
}
%%%\RequirePackage[final]{ps4pdf}
\@ifdefinable\User@Packages{\newwrite\User@Packages}
\AtBeginDocument{%
  %%%\edef\DTK@jobname{\jobname}%
  %%%\edef\PfP@container{\DTK@jobname-pics.pdf}%
  \ifDTK@Author@\else
    \listfiles
    \InputIfFileExists{userpackages.tex}%
    {\typeout{*************************************^^J%
              * File `userpackages.tex' used.^^J%
              *************************************}%
      \newcommand*\RecordPackage[4]{}%
      % warum gibt es kein \@gobblethree? ist jetzt egal!
    }%
    {%
      \immediate\openout\User@Packages userpackages.tex\relax
      \begingroup \catcode`\~=\active \let~=\space
      \immediate\write\User@Packages{%
        \@percentchar\space userpackages.tex^^J%
        \@percentchar\space generated by `\jobname'^^J%
        \@percentchar\space \DTK@today}%
      \endgroup
      \AtEndDocument{%
        \immediate\closeout\User@Packages\relax}%
      \newcommand*\RecordPackage[4]{%
        \immediate\write\User@Packages{%
          \string\usepackage[##1]{##2}[##3] %
          \@percentchar\space From file: ##4}}%
    }%
  \fi
  % RN 2005-03-21
  \@ifpackageloaded{lineno}{%
    \ifDTK@Draft@\else
      \nolinenumbers
    \fi
  }{}
}
% RN 2005-01-22
\def\indexname{Stichwortverzeichnis}% Besser woanders?
% RN 2005-01-23
\def\printindex{%
  \InputIfFileExists{\DTK@jobname.ind}{}{%
    \typeout{No file \DTK@jobname.ind.}%
    \typeout{Use the following command to create it:^^J%
      \@spaces makeindex -s dtk-idx.ist -o \DTK@jobname.ind \DTK@jobname.idx}%
    \typeout{\space}}%
}
% RN 2005-01-22
\@fptop\z@

%    \end{macrocode}
%
%    Now the class is complete.
%    \begin{macrocode}
%</class>
%<*logos>
%    \end{macrocode}
%
%
%    \section{The Package dtklogos}
%
%    This section contains some useful abbreviations. They are mainly
%    some kind of logos.
%    \changes{1.4}{2000/08/27}{Logos moved to a separate package.}
%    \begin{macrocode}
\ProvidesPackage{dtklogos}[\filedate\space\fileversion\space  gene]
%    \end{macrocode}
%
%    First we have to determine which kind of \LaTeX{} is running. We use
%    the existence of the macro \verb|\documentclass| to see if we have a
%    \LaTeXe. This macro should not be defined in \LaTeX\,2.09.
%    \begin{macrocode}
\newif\ifOldLaTeX
\@ifundefined{documentclass}{\OldLaTeXtrue}{\OldLaTeXfalse}
%    \end{macrocode}
%    The following hack is from Bernd Raichle.
%
%    For \LaTeX\,2.09 (with or without NFSS) we need something like
%    the \verb|\smaller| from the obsolete ``smaller.sty'' to emulate
%    SmallCaps for (nearly) all types of fonts. For SmallCaps it is
%    required to reduce further than for \verb|\smaller|. Thus we make
%    a new definition for \verb|\logo@smaller| which is oriented at
%    the ``math sizes'' (here: \verb|\scriptfont<fam>|) which is
%    defined in \LaTeXe.
%
%    \begin{macrocode}
\ifOldLaTeX
\expandafter\ifx\csname selectfont\endcsname\relax
%    \end{macrocode}
%
%   For OFSS a hack is needed to switch back to Family/Series/Shape.
%   For this purpose we ``abuse'' the ``math group/fam'' which is
%   changed similar to the macros from the file ``lfonts.tex''.
%    \begin{macrocode}
  \newcommand{\logo@sm@ller}{\relax
    \expandafter\logo@sm@ll@r\expandafter{\the\fam}}
  \newcommand{\logo@sm@ll@r}[1]{%
    % \ifx\@currsize\tiny \tiny\fi
    \ifx\@currsize\scriptsize \tiny\fi
    \ifx\@currsize\footnotesize \tiny\fi
    \ifx\@currsize\small \scriptsize\fi
    \ifx\@currsize\normalsize \scriptsize\fi
    \ifx\@currsize\large \footnotesize\fi
    \ifx\@currsize\Large \normalsize\fi
    \ifx\@currsize\LARGE \large\fi
    \ifx\@currsize\huge \Large\fi
    \ifx\@currsize\Huge \huge\fi
    \ifcase#1\relax\rm\or\mit\or\cal\or\tenex % not sure about the tenex
        \or\it\or\sl\or\bf\or\tt\or\sf\or\sc\or\ly\fi}
\else
%    \end{macrocode}
%
%   With NFSS (for \LaTeX\,2.09) we can change the size indepenently
%   from the other font properties. Thus things are easier.
%    \begin{macrocode}
  \newcommand{\logo@sm@ller}{%
    \relax\@nomath\logo@smaller
    \ifx\f@size\@vpt \else
      \ifx\f@size\@vipt  \fontsize\@vpt{6pt}\fi
      \ifx\f@size\@viipt \fontsize\@vpt{6pt}\fi
      \ifx\f@size\@viiipt \fontsize\@vipt{7pt}\fi
      \ifx\f@size\@ixpt \fontsize\@vipt{7pt}\fi
      \ifx\f@size\@xpt \fontsize\@viipt{8pt}\fi
      \ifx\f@size\@xipt \fontsize\@viiipt{9.5pt}\fi
      \ifx\f@size\@xiipt \fontsize\@viiipt{9.5pt}\fi
      \ifx\f@size\@xivpt \fontsize\@xpt{12pt}\fi
      \ifx\f@size\@xviipt \fontsize\@xiipt{14pt}\fi
      \ifx\f@size\@xxpt \fontsize\@xivpt{18pt}\fi
      \ifx\f@size\@xxvpt \fontsize\@xxpt{25pt}\fi
      \selectfont
    \fi}
%    \end{macrocode}
%
%   The first versions of NFSS have used the macro name \verb|\size|
%   instead of \verb|\fontsize|.
%    \begin{macrocode}
  \@ifundefined{fontsize}{\let\fontsize=\size}{}
\fi
\newcommand{\logo@smaller}{\protect\logo@sm@ller}
\fi
%    \end{macrocode}
%
%    \subsection{Macros from texnames.sty}
%
%    The following macros are taken from the file {\tt texnames.sty}
%    version \verb|1.09| from \verb|<16 March 1993>| by Nelson
%    H.\,F.~Beebe. I have simply included the definitions here to avoid
%    additional files to be distributed with dtk.dtx. The original
%    documentation has been wrapped into the doc format. And here it goes:
%
%    In the following, we first give the ``official'' definition,
%    then follow it with spelling variants.  Alternate definitions
%    are discarded in favor of the official one.  Each family is
%    separated by a line like the following one.
%
%    \begin{macro}{\TeX}
%    Only change from plain.tex is the \verb|\spacefactor| assignment
%    (suggested by Phil Taylor), so that \TeX\ at the end of a
%    sentence isn't treated as an abbreviation.
%
%    \begin{macrocode}
\renewcommand\TeX{T\kern-.1667em\lower.5ex\hbox{E}\kern-.125emX%
  \spacefactor1000 }
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\AmS}
%    From the AMS tex/ams/amslatex/fontsel/nfssinst.tex file:
%    \begin{macrocode}
\providecommand\AmS{%
  \(\cal A\)\kern-.1667em\lower.5ex\hbox
  {\(\cal M\)}\kern-.125em{\(\cal S\)}}
\providecommand\AMS{\AmS}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\XeTeX}
%    The new TeX\ program
%    \begin{macrocode}
\providecommand{\XeTeX}{X\kern-.1em\lower.5ex\hbox{\reflectbox{E}}\kern-.15em\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\AmSLaTeX}
%    \begin{macrocode}
\providecommand\AmSLaTeX{\AmS-\LaTeX}
\providecommand\AMSLaTeX{\AmSLaTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\AmSTeX}
%    Mike Spivak's amstex/amstex.tex 1.1d [26-Aug-1988] has\\
%    \verb|\def\AmSTeX{{\textfontii A}\kern-.1667em\lower.5ex\hbox|\\
%    \verb|            {\textfontii M}\kern-.125em{\textfontii S}-\TeX}|\\
%    and 2.1 [05-Apr-1991] has an equivalent definition.
%    AmSTeX's \verb|\textfontii| is exactly the same as \verb|\cal|, which
%    all \TeX variants understand.
%
%    \begin{macrocode}
\providecommand\AmSTeX{%
  $\cal A$\kern-.1667em\lower.5ex\hbox{$\cal M$}%
  \kern-.125em$\cal S$-\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\AMSTEX}
%    Leslie Lamport's latex/tmanual.tex [10-Jul-1984] (an early
%    draft of the book) defines it in uppercase with the standard
%    definition.
%    \begin{macrocode}
\providecommand\AMSTEX{\AmSTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\AMSTEX}
%    Barbara Beeton's latex/deproc.sty [24-Apr-1986] and inputs/tugbot.sty
%    [11-Jan-1988] uses this spelling, but the definition\\
%    \verb|\leavevmode\hbox{$\cal A\kern-.2em\lower.376ex \hbox{$\cal|\\
%    \verb|M$}\kern-.2em\cal S$-\TeX}|
%    \begin{macrocode}
\providecommand\AMSTeX{\AmSTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\BibTeX}
%    The definitions of \verb|\BibTeX| and \verb|\SLiTeX| in Leslie Lamport's
%    latex/local.tex lower the E by 0.7ex, while \TeX in plain.tex lowers
%    it by 0.5ex.  Oren Patashnik's bibtex/btxdoc.tex and bibtex/btxhak.tex
%    [08-Feb-1988] and bibtex/bibtex.web 0.99c [xx-Feb-1988] use this same
%    name and definition, but Oren said using \TeX here is ok.  (Curiously,
%    \LaTeX itself does not define macros for any \TeX ware except \LaTeX and
%    \TeX!)
%
%    \begin{macrocode}
\ifOldLaTeX
  \newcommand{\BibTeX}{\protect\pBibTeX}
  \newcommand{\pBibTeX}{B\kern-.05em%
    \hbox{\logo@smaller I\kern-.025emB}\kern-.08em%
    \-\TeX}
\else
  \DeclareRobustCommand{\BibTeX}{B\kern-.05em%
%    \end{macrocode}
%
%    The following hack comes from the definition of the macro \LaTeX\
%    cf.~file ``ltlogos.dtx'' from the \LaTeXe\ distribution. der
%    \begin{macrocode}
    \hbox{$\m@th$% %% force math size calculations
          \csname S@\f@size\endcsname
          \fontsize\sf@size\z@
          \math@fontsfalse\selectfont
          I\kern-.025emB}%
    \kern-.08em%
    \-\TeX}
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\BIBTeX}
%    Leslie Lamport uses this spelling in latex.tex, but not as a
%    macro.  We include it for consistency with AMSTeX.
%
%    \begin{macrocode}
\providecommand\BIBTeX{\BibTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\BIBTEX}
%    Leslie Lamport's latex/slides.tex [05-Jun-1984],
%    latex/tmanual.tex [10-Jul-1984] (an early draft of the book),
%    and latex/lerrata.tex [23-Jul-1985] have this spelling, but the
%    definition \verb|BIB\kern-.1em\TeX|.
%
%    \begin{macrocode}
\providecommand\BIBTEX{\BibTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LAMSTeX}
%    From tugboat.com 1.08 [24-Oct-1990].
%
%    \begin{macrocode}
\providecommand\LAMSTeX{%
  L\raise.42ex\hbox{\kern-.3em\the\scriptfont2 A}%
  \kern-.2em\lower.376ex\hbox{\the\textfont2 M}%
  \kern-.125em {\the\textfont2 S}-\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LamSTeX}
%    This is just a variant of the macro above.
%
%    \begin{macrocode}
\providecommand\LamSTeX{\LAMSTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LAmSTeX}
%    This variant seems likely to appear:
%
%    \begin{macrocode}
\providecommand\LAmSTeX{\LAMSTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LaTeX}
%    The definition from latex.tex (\LaTeX{} VERSION 2.09 $<$14 January
%    1991$>$) and bibtex.web 0.99c [xx-Feb-1988] lowers the E slightly
%    more than \TeX, but consistency seems more desirable.  See
%    comments at \BibTeX.  Different definitions are given by
%    latex/deproc.sty [24-Apr-1986], amstex/man.sty [15-Dec-1986]
%    inputs/tugbot.sty [11-Jan-1988], and  latex/tugboat.com 1.08
%    [24-Oct-1990].
%
%    \begin{macrocode}
\providecommand\LaTeX{%
  L\kern-.36em\raise.3ex\hbox{\sc a}\kern-.15em\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LATEX}
%    latex/slides.tex [05-Jun-1984] and latex/lerrata.tex [23-Jul-1985]
%    have this spelling, but different definitions
%
%    \begin{macrocode}
\providecommand\LATEX{\LaTeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LaTeXTeX}
%    This logo is invented in \verb|dtk.cls| to denote either \TeX{} or
%    \LaTeX.
%
%    \begin{macrocode}
\ifOldLaTeX
  \newcommand\LaTeXTeX{(\kern-.15emL\kern-.36em\raise.3ex\hbox{\sc
      a}\kern-.3em)\kern-.15em\TeX}%
\else
  \DeclareRobustCommand{\LaTeXTeX}{(\kern-.15emL\kern-.36em%
    {\sbox\z@ T%
      \vbox to\ht0{\hbox{$\m@th$%
          \csname S@\f@size\endcsname
          \fontsize\sf@size\z@
          \math@fontsfalse\selectfont
          A}%
        \vss}%
      }\kern-.2em)%
    \kern-.15em%
    \TeX}
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\MF}
%    Don Knuth's mf.web 2.7 [xx-Sep-1990] and Barbara Beeton's
%    latex/deproc.sty [24-Apr-1986] use an equivalent of this definition.
%    The font is variously named \verb|\logo|, \verb|\manfnt|, and
%    \verb|\mf|. plain.tex
%    preloads \verb|\manfnt|.  manfnt has the letters A, E, F, M, N, O, T in
%    various sizes plus extra symbols for Don Knuth's books Computers and
%    Typesetting, and Concrete Mathematics, while logo10 has only those
%    letters in one size.  AmSTeX uses \verb|\logo| in amsppt.sty and
%    imappt.sty, so we should avoid it, and tugboat.com uses
%    \verb|\mf| for \verb|{\smc Metafont}|. We therefore use
%    \verb|\manfnt| here, defining it if necessary.  QUESTION: should
%    we use manfnt, or logo10?
%
%    \begin{macrocode}
\ifOldLaTeX
  \ifx\manfnt\@undefined
    \font\manfnt=logo10
  \fi
  \ifx\manfntsl\@undefined
    \font\manfntsl=logosl10
  \fi
  \newcommand\MF{\begingroup
    \ifdim\fontdimen1\font>0pt \let\manfnt=\manfntsl \fi
    {\manfnt META}\-{\manfnt FONT}\endgroup\spacefactor1000 }%
  \newcommand\MP{\begingroup
    \ifdim\fontdimen1\font>0pt \let\manfnt=\manfntsl \fi
    {\manfnt META}\-{\manfnt POST}\endgroup\spacefactor1000 }%
\else
%    \end{macrocode}
%
%    The following improved definitions are taken from mflogo by Ulrik
%    Vieth.
%
%    \begin{macrocode}
  \DeclareFontFamily{U}{logo}{}
  \DeclareFontShape{U}{logo}{m}{n}{
    <8> <9> gen * logo
    <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88> logo10
    }{}
  \DeclareFontShape{U}{logo}{m}{it}{
    <8> <9> gen * logosl
    <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88> logosl10
    }{}
  \DeclareFontShape{U}{logo}{m}{sl}{
    <-> ssub * logo/m/it
    }{}
  \DeclareFontShape{U}{logo}{sbc}{n}{
    <8> <9> sub * logo/m/n
    <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88> logobf10
    }{}
  \DeclareFontShape{U}{logo}{b}{n}{
    <8> <9> sub * logo/m/n
    <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88> logod10
    }{}
  \DeclareFontShape{U}{logo}{bx}{n}{
    <-> ssub * logo/b/n
    }{}
  \DeclareRobustCommand\logofamily{%
    \not@math@alphabet\logofamily\relax
    \fontencoding{U}\fontfamily{logo}\selectfont}
  \DeclareTextFontCommand{\textlogo}{\logofamily}
%    \end{macrocode}
%
%    \changes{1.4}{2000/08/06}{Hyphenation of meta-font and meta-post only.}
%
%    \begin{macrocode}
  \newcommand\MF{\mbox{\textlogo{META}}\-\mbox{\textlogo{FONT}}\@}
  \newcommand\MP{\mbox{\textlogo{META}}\-\mbox{\textlogo{POST}}\@}
\fi
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\METAFONT}
%    I cannot find any ``official'' uses of this alternate, but it
%    seems likely that people will use it.
%
%    \begin{macrocode}
\providecommand\METAFONT{\MF}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\METAPOST}
%    In analogy to \verb|METAFONT|.
%
%    \begin{macrocode}
\providecommand\METAPOST{\MP}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SLITEX}
%    Leslie Lamport's latex/slides.tex [05-Jun-1984].  His
%    latex/lerrata.tex [23-Jul-1985] and latex/tmanual.tex
%    [10-Jul-1984] (an early draft of the book) define it as
%    SLI\TeX!  The \LaTeX\ User's Guide and Reference Manual (1986)
%    appears to use small caps, and possibly kerning, for Sli.
%    I need to ask Leslie to suggest a preferred definition.
%
%    \begin{macrocode}
\providecommand\SLITEX{%
    S\kern-.065em L\kern-.18em\raise.32ex\hbox{i}%
    \kern-.03em\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SLiTeX}
%    latex/local.tex (sample Local Guide) [27-Oct-1988] uses
%    this name, but defines it as\\
%    \verb|{\rm S\kern-.06em{\sc l\kern-.035emi}\kern-.06em T\kern|\\
%    \verb|  -.1667em\lower.7ex\hbox{E}\kern-.125emX}|\\
%    with an extra-low E, and kerned Sli in small caps.  Is this
%    what the \LaTeX\ User's Guide and Reference Manual (1986) used?
%
%    \begin{macrocode}
\providecommand\SLiTeX{\SLITEX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SliTeX}
%    latex/slitex.tex [08-Jun-1988] uses SliTeX in typeouts,
%    but not as a macro -- what a way to confuse the user.
%
%    \begin{macrocode}
\providecommand\SliTeX{\SLITEX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\SLITeX}
%    I cannot find a use of this one, but it seems a likely
%    candidate anyway, and is consistent with AMSTeX and BIBTeX.
%
%    \begin{macrocode}
\providecommand\SLITeX{\SLITEX}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Additional Macros}
%
%    Some additional logos showed up during the years they are
%    collected in this section.
%
%    \begin{macro}{\NTS}
%    This one comes from a communication with Bernd Raichle.
%
%    \begin{macrocode}
\providecommand\NTS{\mbox{\mathsurround=0pt
    \(\cal N\mkern -4mu\lower .5ex\hbox{$\cal T$}\mkern -2mu S\)}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\MakeIndex}
%    This one comes from a communication with Bernd Raichle based on
%    makeindex.tex -- released 17 February 1987 by Leslie Lamport.
%    \begin{macrocode}
\providecommand\MakeIndex{\textit{Make\-Index}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\emTeX}
%
% \changes{1.3}{1997/02/03}{logo added.}
%    \begin{macrocode}
\providecommand\emTeX{{em\TeX}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\PublicTeX}
%
%    \changes{1.3}{1997/02/03}{logo added.}
%    \begin{macrocode}
\providecommand\PubliCTeX{PubliC\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TeXXeT}
%    This one comes from the sources of web2c.
%    \changes{1.2}{1996/12/15}{logo added.}
%    \begin{macrocode}
\providecommand\TeXXeT{%
    \TeX--X\kern-.125em\lower.5ex\hbox{E}\kern-.1667emT}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TeXeT}
%    This one comes from the sources of web2c.
%    \changes{1.2}{1996/12/15}{logo added.}
%    \begin{macrocode}
\providecommand\TeXeT{%
    \TeX-X\kern-.125em\lower.5ex\hbox{E}\kern-.1667emT}
%    \end{macrocode}
%    \end{macro}
%
%
%    \begin{macro}{\WinEdt}
%    This one comes from Volker RW Schaa.
%    \changes{1.7}{2001/11/02}{logos added.}
%    \begin{macrocode}
\providecommand\WinEdt{\mbox{\textsf{WinEdt}}}%
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\WinEdtKK}
%    This one comes from Volker RW Schaa.
%    \changes{1.7}{2001/11/02}{logos added.}
%    \begin{macrocode}
\providecommand\WinEdtKK{\mbox{\textsf{WinEdt2k}}}%
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LyX}
%    This one comes from an article by Laura E. Jackson and Herbert Vo\ss.
%    \changes{1.7}{2001/11/02}{logo added