%\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.}
%    \begin{macrocode}
\providecommand{\LyX}{L\kern-.1667em\lower.25em\hbox{Y}\kern-.125emX\@}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\exTeX}
%    This one comes from the \exTeX\ team
%    \changes{1.9}{2003/11/03}{logo added.}
%    \begin{macrocode}
\providecommand*{\exTeX}{%
  \textrm{% das Logo grundsätzlich serifenbehaftet
    \ensuremath{\textstyle\varepsilon_{\kern-0.15em\mathcal{X}}}%
    \kern-.15em\TeX
  }%
}
%    \end{macrocode}
%    \end{macro}
%
%
%    \subsection{Additional Macros for Acronyms}
%
%    The following macros are maily form the predecessor style
%    file. Some new ones have been added.
%
%    \begin{macro}{\eV}
%    The abbreviation for e.V\kern-.18em.\ is defined in
%    this macro. The kerning of the letters is corrected manually.
%
%    \begin{macrocode}
  \providecommand\eV{e.V\kern-.18em\@ifnextchar.{}{.}}
%    \end{macrocode}
%    Disclaimer: I have not invented this macro. It has been defined
%    this way in the predecessor style.
%    \begin{macrocode}
%</logos>
%<*1995>
  \renewcommand\eV{e.\kern-.18emV\kern-.18em\@ifnextchar.{}{.}}
%</1995>
%<*logos>
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\dante}
%    The ``official logo'' for DANTE e.V\kern-.18em.\ is defined.
%    \begin{macrocode}
\providecommand\dante{DANTE \eV}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Dante}
%    The long name of DANTE.
%    \begin{macrocode}
\providecommand\Dante{DANTE,
  Deutschsprachige Anwendervereinigung \TeX~\eV}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DTK}
%    The long name of this booklet, eh journal.
%    \begin{macrocode}
\providecommand\DTK{Die \TeX\-ni\-sche Ko\-m{\"o}\-die}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\LaTeXe}
%    If \verb|\LaTeXe| is not defined then define it. Since this macro
%    is so essential we just want to be sure that it exists.
%    \begin{macrocode}
\providecommand\LaTeXe{%
  \LaTeX{}\kern.05em2$_{\textstyle\varepsilon}$}
%    \end{macrocode}
%    \end{macro}
%
%
%    \begin{macro}{\PS}
%    We define the logo for Post\-Script.
%    \begin{macrocode}
\providecommand\PS{Post\-Script}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\PiC}
%    For some reason this is not defined in texnames.sty. Since it has
%    been in the predecessor of this style it is also defined here.
%    \begin{macrocode}
\providecommand\PiC{P\kern-.12em\lower.5ex\hbox{I}\kern-.075emC}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\PiCTeX}
%    Now the previous macro is combined with \TeX.
%    \begin{macrocode}
\providecommand\PiCTeX{\PiC\kern-.11em\TeX}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TUG}
%    The \TeX{} Users Group.
%    \begin{macrocode}
\providecommand\TUG{\TeX{} Users Group}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TUGboat}
%    The communications of the \TeX{} Users Group.
%    \begin{macrocode}
\providecommand\TUGboat{\textsl{TUGboat}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TUB}
%    The communications of the \TeX{} Users Group.
%    \begin{macrocode}
\let\TUB\TUGboat
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\TTN}
%    The communications of the \TeX{} Users Group
%    \begin{macrocode}
\providecommand\TTN{\textsl{\TeX{} and TUG NEWS}}
%    \end{macrocode}
%    \end{macro}
%
%
%    \begin{macro}{\NFSS}
%    The New Font Selection Scheme.
%    \begin{macrocode}
\providecommand\NFSS{\textsf{NFSS}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\NTS}
%    I don't know where this one comes from.
%    \changes{1.4}{2000/08/06}{NTS logo added.}
%    \begin{macrocode}
\providecommand\NTS{\leavevmode
  \hbox{$\cal N\kern-0.35em\lower0.5ex\hbox{$\cal T$}\kern-0.2emS$}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\eTeX}
%    I don't know where this one comes from.
%    \changes{1.4}{2000/08/06}{eTeX logo added.}
%    \begin{macrocode}
\providecommand\eTeX{{\leavevmode\hbox{$\varepsilon$}-\TeX}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ExTeX}
% ^^A das Logo grundsätzlich serifenbehaftet
%    This logo will generally sport serifs.
%    \changes{1.9-pre}{2005/01/15}{ExTeX logo added. (RN)}
%    \begin{macrocode}
\providecommand*{\ExTeX}{% RN 2005-01-15
  \textrm{% das Logo grundsätzlich serifenbehaftet
    \ensuremath{\textstyle\varepsilon_{\kern-0.15em\mathcal{X}}}%
    \kern-.15em\TeX
  }%
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\DANTE}
%    The ``official logo'' for DANTE is defined, using special fonts.
%    \changes{1.9-pre}{2005/01/15}{DANTE logo with special fonts added. (RN)}
%    \begin{macrocode}
\IfFileExists{ot1dante.fd}% RN 2005-01-15
{%
  \providecommand*\DANTE[1][]{%
    \begingroup
      \usefont{OT1}{dante}{m}{n}\selectfont DANTE%
    \endgroup
  }
}
{\providecommand*\DANTE[1][]{DANTE}}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\ConTeXt}
%    \begin{macro}{\conTeXt}
%    This one has been missing for a long time!
%    \changes{1.9-pre}{2005/01/17}{ConTeXt logos added. (RN)}
%    \begin{macrocode}
\providecommand*\ConTeXt{Con\TeX t}
\providecommand*\conTeXt{con\TeX t}
%    \end{macrocode}
%    \end{macro}
%    \end{macro}
%
%    \begin{macro}{\Than}
%    Makes life easier \ldots
%    \begin{macrocode}
\providecommand\Thanh{H\`an Th\^e\protect\llap{\raise 0.5ex\hbox{\'{\relax}}} Th\`anh}
%    \end{macrocode}
%    \end{macrocode}
%
%    \begin{macro}{\MiKTeX}
%    \begin{macro}{\MikTeX}
%    Yet another logo \dots
%    \changes{1.9-pre}{2005/01/17}{MiKTeX logo added. (RN)}
%    \begin{macrocode}
\providecommand*\MiKTeX{MiK\TeX}
\providecommand*\MikTeX\MiKTeX
%    \end{macrocode}
%    \end{macro}
%    \end{macro}
%
%    \begin{macrocode}
%</logos>
%    \end{macrocode}
%
%
%^^A ??? 2005-02-11
%    \section{The Package dtk-pdf for PDF Reprints}
%    \changes{1.4}{2000/08/12}{Packet dtk-pdf integrated.}
%
%    The following section contains the package which is used to
%    produce the PDF files for the WWW.
%
%    \begin{macrocode}
%<*pdf>
%    \end{macrocode}
%
%   A lot of packages are required to get things right.
%
%    \begin{macrocode}
\ProvidesPackage{dtk-pdf}[\filedate\space\fileversion\space  gene]
%    \end{macrocode}
%
%   A lot of packages are required to get things right.
%
%    \begin{macrocode}
\RequirePackage{multicol,graphicx,color}
\RequirePackage[bookmarks=false]{hyperref}
%    \end{macrocode}
%
%   Configure the \verb|hyperref| package appropriately.
%
%    \begin{macrocode}
\definecolor{navy}{rgb}{0,0,.5}
\hypersetup{a5paper,colorlinks,urlcolor=navy}
%    \end{macrocode}
%
%   Slightly adjust the page on the paper.
%
%    \begin{macrocode}
\oddsidemargin=-10mm
\evensidemargin=-10mm
\topmargin=-15mm
%    \end{macrocode}
%
%    \begin{macro}{\Volume}
%    This macro contains the number of the volume in which the current
%    article has been published.
%    \begin{macrocode}
\renewcommand\Volume{?/??}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\Pages}
%    This macro contains the numbers of the pages on which the
%    curtrent article has been published originally.
%    \begin{macrocode}
\newcommand\Pages{???}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\volume}
%    This macro is redefined to show appropriate information.
%    \begin{macrocode}
\renewcommand\volume{\Volume\ -- Nachdruck}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\titlemark}
%    This macro is used in some old articles. Nowadays it simply has
%    to eat up one following argument.
%    \begin{macrocode}
\let\titlemark\@gobble
%    \end{macrocode}
%    \end{macro}
%
%
%
%    \begin{macrocode}
\newcount\AdNo \AdNo=0
%    \end{macrocode}
%
%    \begin{macro}{\Address}
%    This macro is used to typeset all adresses.
%    \begin{macrocode}
\newcommand\Address{\bigskip\par\advance\AdNo1
  \begin{multicols}2 \count255=0\relax
    \loop\csname Address\the\count255\endcsname\advance\count255 1
    \ifnum\count255<\AdNo \repeat
  \end{multicols}}
%    \end{macrocode}
%    \end{macro}
%
%
%
%    \begin{macrocode}
\renewcommand\address[3]{%
  \expandafter\gdef\csname Address\the\AdNo\endcsname
  {\par\parbox{.45\textwidth}{\footnotesize\raggedright
      #1 #2 \\#3}}\advance\AdNo1\relax}
%    \end{macrocode}
%
%   Store the address of DANTE as first address in the list.
%
%    \begin{macrocode}
\address{\href{http://www.dante.de/}{\Dante}}{}{%
  \href{http://www.dante.de/}{Postfach 10\,18\,40\\
    69008 Heidelberg\\
    \texttt{dante@dante.de}}}
%    \end{macrocode}
%
%
%
%    \begin{macrocode}
\providecommand\DTK@keywords{}
%    \end{macrocode}
%
%    \begin{macro}{\m@ketitle}
%    Save the meaning of \verb|\maketitle| to extend it.
%    \begin{macrocode}
\let\m@ketitle=\maketitle
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\maketitle}
%    The macro is redefined to typeset the head of the single article.
%    Th information for the author and the title are stored in the PDF
%    information fields aswell. This may lead to problems if they
%    contain certain macros.
%    \changes{1.5}{2001/10/21}{Mapping of certain macros}
%    \changes{1.8}{2003/06/22}{Making thanks void when processing the
%    head of a reprint}
%    \begin{macrocode}
\renewcommand\maketitle{%
  \thispagestyle{empty}%
  \newlength{\l@@x}\settowidth{\l@@x}{\Large\DTK}%
  \advance\l@@x3em\quad
  \href{http://www.dante.de/dante/DTK}{%
    \rotatebox{90}{\hspace*{1.5em}\Large\DTK}}
  \rule{.9pt}{\l@@x}\quad
                                %
  \begin{minipage}[b]{.75\textwidth}\parskip=1ex
    {\raggedleft\large
      \href{http://www.dante.de/}{DANTE\\
      Deutschsprachige\\
      Anwendervereinigung \TeX\ e.V.}\medskip\par
      }%
    {\let\thanks\@gobble
    \ifx\@author\empty\else\@author: \fi
    \ifx\@title\empty\else\emph{\@title}, \fi
    }
    \DTK\ \Volume, S.\ \Pages.\medskip

    \scriptsize Reproduktion oder Nutzung dieses Beitrags durch
    konventionelle, elektronische oder beliebige andere Verfahren ist
    nur im nicht-kommerziellen Rahmen gestattet.  Verwendungen in
    gr"o"serem Umfang bitte zur Information bei \dante{} melden.  F\"ur
    kommerzielle Nutzung ist die Zustimmung der Autoren einzuholen.

    \DTK\ ist die Mitgliedszeitschrift von \Dante. Einzelne Hefte
    k\"onnen von Mitgliedern bei der Gesch\"aftsstelle von \Dante\
    erworben werden. Mitglieder erhalten \DTK\ im Rahmen ihrer
    Mitgliedschaft.
  \end{minipage}

  \begingroup
    \def\LaTeX{LaTeX}%
    \def\BibTeX{BibTeX}%
    \def\TeX{TeX}%
    \def\LyX{LyX}%
    \hypersetup{%
      pdftitle=\@title,
      pdfauthor=\@author,
      pdfkeywords={\DTK@keywords},
      pdfsubject={\volume},
      pdfstartview={FitBH}
      }%
  \endgroup
  \m@ketitle
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\textcentigrade}
%    This macro is defined for backward compatibility.
%    \begin{macrocode}
\def\textcentigrade{\textcelsius}
%    \end{macrocode}
%    \end{macro}
%
%
%    \verb|\guillemotleft|/\verb|\guillemotright| from the polish
%    version of the ``computer modern''.
%
%    \begin{macrocode}
\AtBeginDocument{%
  \DeclareFontEncoding{OT4}{}{}%
  \DeclareFontEncoding{TS1}{}{}%
  \DeclareFontSubstitution{OT4}{cmr}{m}{n}%
  \DeclareTextCommand{\guillemotleft}{\encodingdefault}{%
    {\fontencoding{OT4}\fontfamily{cmr}\selectfont\char174}}%
  \DeclareTextCommand{\guillemotright}{\encodingdefault}{%
    {\fontencoding{OT4}\fontfamily{cmr}\selectfont\char175}}%
  \DeclareTextCommand{\guilsinglleft}{\encodingdefault}{%
    {\fontencoding{T1}\fontfamily{cmr}\selectfont\char14}}%
  \DeclareTextCommand{\guilsinglright}{\encodingdefault}{%
    {\fontencoding{T1}\fontfamily{cmr}\selectfont\char15}}%
  \DeclareTextCommand{\textperthousand}{\encodingdefault}{%
    {\fontencoding{TS1}\fontfamily{cmr}\selectfont\char135}}%
}
%    \end{macrocode}
%
%
%
%    \begin{macrocode}
\newif\ifmaintitle
%    \end{macrocode}
%
%   Old versions of \LaTeX\ used to define \verb|\footheight|. Some
%   articles try to redefine this length.  Nowadays it is simply
%   ignored.
%    \begin{macrocode}
\newlength\footheight
%    \end{macrocode}
%
%   Now the packet is complete.
%
%    \begin{macrocode}
%</pdf>
%    \end{macrocode}
%
%
%    \section{The Index Style}
%    \changes{1.4}{2000/08/27}{Index file integrated into the dtx file.}
%    \changes{1.9-pre}{2005/01/15}{Addresses are now collected via
%             glossary instead of index (RN).}
%    \changes{1.9-pre}{2005/01/15}{Add keyword \cmd{\glossaryentry} (RN).}
%
%    The index style is used to sort the authors of the journal for
%    the list of all authors. Makeindex is used for this purpose. Here
%    we have to define the appropriate configuration file.
%
%    \begin{macrocode}
%<*adr>
actual '*'
preamble  "\\begin{theaddresses}"
postamble "\n\\end{theaddresses}\n"
item_0 "\n  \\addressitem{"
item_2 "}{"
item_x1 "}{"
item_x2 "}{"
delim_0 "}{"
delim_1 "}{"
delim_2 "}{"
delim_t "}"
group_skip ""
quote '$'
%%$
keyword "\\glossaryentry"
%</adr>
%    \end{macrocode}
%
%
%    \section{The Index Style}
%
%    ???
%
%    \begin{macrocode}
%<*idx>
%%
%% This is file `Letter.ist',
%%
%% The idea is from Ingo Kloeckl, Latex2e:
%% Herbert Voss 000726
%%
%% This is a MAKEINDEX style file which should be used to
%% generate the formatted change history for use with the doc
%% package. The TeX commands used below are defined in
%% doc.sty.  The commands for MAKEINDEX like `level'
%% `item_x1' are described in `` Makeindex, A General
%% Purpose, Formatter-Independent Index Processor'' by
%% Pehong Chen.
%%
headings_flag       1           % headings yes
heading_prefix   "{\\SectionFont "%
heading_suffix   "}\n"          % newline
%
quote                '"'
%%level                '>'
preamble
  "\\begin{theindex}\n"
item_1
  "\\par\\leavevmode\\hangindent10pt\\makebox[10pt][l]{--}"
item_01
  "\\par\\leavevmode\\hangindent10pt\\makebox[10pt][l]{--}"
item_x1
  "\\par\\leavevmode\\hangindent10pt\\makebox[10pt][l]{--}"
item_2
  "\\par\\leavevmode\\hangindent20pt\\makebox[20pt][l]{-- -- }"
item_12
  "\\par\\leavevmode\\hangindent20pt\\makebox[20pt][l]{-- -- }"
item_x2
  "\\par\\leavevmode\\hangindent20pt\\makebox[20pt][l]{-- -- }"
%%
%%
%% End of file `Letter.ist'.
%</idx>
%    \end{macrocode}
%
%    That's all.
%
%    \Finale
%
\endinput
%
% Local Variables:
% mode: latex
% TeX-master: t
% End:
