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% ltubguid.ltx - documentation for ltugboat classes.
% 
%% Copyright 1994,1995,1996,2001,2005,2006 TeX Users Group.
%% 
%% This file is part of the tugboat package.
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%%   http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2003/12/01 or later.
%%
%% This work has the LPPL maintenance status "maintained".
%% 
%% The Current Maintainer of this work is the TeX Users Group
%% (http://tug.org/TUGboat).
%%
%% The list of all files belonging to the distribution is
%% given in the file `manifest.txt'. 
%%
%% The list of derived (unpacked) files belonging to the distribution 
%% and covered by LPPL is defined by the unpacking scripts (with 
%% extension .ins) which are part of the distribution.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  tubguide.bib -- the bibliography for this paper (apart from the
%  references to TUGboat itself)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\begin{filecontents}{tubguide.bib}
% BibTeX bibliography file (generated by aux2bib)

@Misc{Arseneau:url:1996,
  author = {Donald Arseneau},
  title = {The {\textsf{url}} package},
  year = {1996},
  howpublished = {Available from {\CTAN}, {\CTANref{url}}}
}

@Article{Baxter:TB15-3-331,
  author = {William Erik Baxter},
  title = {{{An object-oriented programming system in {\TeX}}}},
  journal = {{\TUB}},
  year = {1994},
  month = {September},
  volume = {15},
  number = {3},
  pages = {331--338}
}

@Misc{Duggan:moreverb:1996,
  author = {Angus Duggan and Rainer Sch{\umlaut{o}}pf and Victor Eijkhout and
    Robin Fairbairns},
  title = {The {\textsf{moreverb}} package},
  year = {1997},
  howpublished = {Available from {\CTAN}, {\CTANref{moreverb}}}
}

@Misc{Rahtz:hyperref:1997,
  author = {Sebastian Rahtz},
  title = {The {\textsf{hyperref}} system},
  year = 1997,
  howpublished = {Available from {\CTAN}, {\CTANref{hyperref}}}
}

@Book{Lamport:1994,
  author = {Leslie Lamport},
  title = {{\LaTeX}, a Document Preparation System},
  edition = {\nth{2}},
  year = {1994},
  publisher = {Addison-Wesley}
}

@Article{Ogawa:TB15-3-325,
  author = {Arthur Ogawa},
  title = {{{Object-oriented programming, descriptive markup, and {\TeX}}}},
  journal = {{\TUB}},
  year = {1994},
  month = {September},
  volume = {15},
  number = {3},
  pages = {325--330}
}

@Article{Rowley:TB15-1-63,
  author = {Chris Rowley},
  title = {{{{\LaTeXe} update, dateline: 31 January 1994}}},
  journal = {{\TUB}},
  year = {1994},
  month = {March},
  volume = {15},
  number = {1},
  pages = {63}
}

@Misc{Schoepf:verbatim:1996,
  author = {Rainer Sch{\umlaut{o}}pf},
  title = {The {\textsf{verbatim}} package},
  year = {1996},
  month = {June},
  howpublished = {Part of the \textsf{tools} bundle, available from {\CTAN},
  {\CTANref{tools}}}
}

@Article{Swift:TB16-3-269,
  author = {Matt Swift},
  title = {Modularity in {\LaTeX}},
  journal = {{\TUB}},
  year = {1995},
  volume = {16},
  number = {3},
  pages = {269--275}
}

@Misc{Vieth:mflogo:1995,
  author = {Ulrik Vieth},
  title = {The {\textsf{mflogo}} package},
  year = {1995},
  howpublished = {Available from {\CTAN}, {\CTANref{mflogo}}}
}

@Article{Whitney:TB10-3-378,
  author = {Ron Whitney and Barbara Beeton},
  title = {{{{\TUB} authors' guide}}},
  journal = {{\TUB}},
  year = {1989},
  month = {November},
  volume = {10},
  number = {3},
  pages = {378--385}
}

\end{filecontents}
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ctandir.sty -- an experimental style file to go with Donald
% Arseneau's url.sty to perform some of the functions that we use the
% \FAQverb stuff in the UK TUG FAQ for
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\begin{filecontents}{ctandir.sty}
%
% Experimental CTAN location information macros for use with Donald
% Arseneau's |url.sty|
%
% we need url.sty; we can rely on it to demand anything it needs of
% LaTeX
\IfFileExists{url.sty}%
  {\RequirePackage{url}}%
  {\PackageWarning{ctandir}{You should acquire a copy of url.sty}%
   \newcommand\urldef[3]{\def#1{\texttt{#3}}}%
   \let\url\texttt
  }
%
\newcommand\CTANdirectory[1]{\expandafter\urldef
  \csname CTAN@#1\endcsname\path}
\newcommand\CTANfile[1]{\expandafter\urldef
  \csname CTAN@#1\endcsname\path}
%
% Use the standard label-referencing mechanism to get the warning for
% an undefined label
\newcommand\CTANref[1]{\expandafter\@setref\csname CTAN@#1\endcsname
  \relax{#1}}
\end{filecontents}
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\listfiles
\setcounter{errorcontextlines}{999}
\documentclass[harvardcite,final]{ltugboat}
\usepackage{ctandir}
\IfFileExists{booktabs.sty}%
  {\usepackage{booktabs}}%
  {\let\midrule\hline}
%
% only tell me important overfulls, please
\hfuzz=2pt
%
% define CTAN addresses using the commands of the |ctandir| package
\CTANdirectory{bibextract}{biblio/bibtex/utils/bibextract}
\CTANdirectory{mflogo}{macros/latex/contrib/mflogo}
\CTANdirectory{moreverb}{macros/latex/contrib/moreverb}
\CTANdirectory{packages}{macros/latex/required}
\CTANdirectory{tools}{macros/latex/required/tools}
\CTANdirectory{tub-latex}{macros/latex/contrib/tugboat}
\CTANdirectory{hyperref}{macros/latex/contrib/hyperref}
%
\CTANfile{cite}{macros/latex/contrib/cite/cite.sty}
\CTANfile{tub-biblio}{digests/tugboat/biblio/tugboat.bib}
\CTANfile{url}{macros/latex/contrib/misc/url.sty}
%
% commands that would be defined by changebar if we were using it:
\providecommand\cbstart{}
\providecommand\cbend{}
%
% this isn't really all that much of a `proof' copy
\NoBlackBoxes
%
% ***** Commands provided by this paper *****
%
% Typeset the name of an environment, class, package, option, program
\providecommand\envname[1]{\textsf{#1}}
\providecommand\clsname[1]{\textsf{#1}}
\providecommand\pkgname[1]{\textsf{#1}}
\providecommand\optname[1]{\textsf{#1}}
\providecommand\progname[1]{\textsf{#1}}
%
% A list of options for a package/class
\newenvironment{optlist}{\begin{description}%
   \renewcommand\makelabel[1]{%
     \descriptionlabel{\mdseries\optname{##1}}}%
   \itemsep0.25\itemsep}%
  {\end{description}}
%
% A list of command names (using \mdwcmd, which as its name implies
% comes from the work of Mark Wooding)
\newenvironment{cmdlist}{\begin{description}%
   \renewcommand\makelabel[1]{%
     \descriptionlabel{\mdseries\mdwcmd##1}}%
   \itemsep0.25\itemsep}%
  {\end{description}}
%
\makeatletter
\providecommand{\mdwcmd}[1]{%
  \expandafter\texttt\expandafter{\string#1}%
  \mdwcmd@i}
\def\mdwcmd@i{\futurelet\@let@token\mdwcmd@ii}
\def\mdwcmd@ii{%
  \let\@tempa\relax%
  \ifx\@let@token\bgroup%
    \def\@tempa##1{\texttt{\char`\{}\textit{##1}\texttt{\char`\}}\mdwcmd@i}%
  \fi%
  \ifx\@let@token[%
    \def\@tempa[##1]{\texttt{[}\textit{##1}\texttt{]}\mdwcmd@i}%
  \fi%
  \@tempa%
}
\makeatother
%
% for raggedy-footnotes (necessary for CTAN references, I find)
\newcommand\raggedfoot{\rightskip=\raggedskip plus\raggedstretch\relax}
%
% To use umlauts in a bibliography entry in BibTeX 0.99, we have to
% use a certain amount of subterfuge...
\let\umlaut\"
%
%%%%%%%%%%%%%%%%
\begin{document}
%%%%%%%%%%%%%%%%
%
\title{The \LaTeXe\ \TUB{} Macros}
\author{Robin Fairbairns}
\address{University of Cambridge Computer Laboratory\\
  William Gates Building\\
  J J Thomson Avenue,\\
  Cambridge CB3 0FD,\\
  UK}
\netaddress{rf@cl.cam.ac.uk}
\personalURL{http://www.cl.cam.ac.uk/users/rf/robin.html}
\maketitle

\section{Introduction}

This note reports on a new set of macros for use by \TUB{} authors.
The macros represent a development of the earlier \clsname{ltugboat} and
\clsname{ltugproc} styles that were written for use with \LaTeX~2.09.  The
development was started by others than I, notably Sebastian Rahtz,
Michel Goossens, Nico Poppelier and Johannes Braams; I have been
assisted in my work both directly and indirectly by many others,
including Barbara Beeton, Mimi Burbank and (of course) the \LaTeX3
team.

The ultimate aim of the work is to provide a single production
environment for the whole of \TUB{}.  That aim has not (yet) been
achieved, though it is still believed to be achievable for a
significant proportion of papers.\footnote{\TUB{} will continue to
accept papers written using the `plain' macros; it's probably
fanciful to hope that \emph{every} paper can be moulded into use
within \LaTeX.}

\section{Availability}

\begin{sloppypar}
  The macros are released for general use, and are distributed via
  \CTAN{}\footnote{\raggedfoot From directory \CTANref{tub-latex}} in the usual
  \LaTeX{} way as files \path|tugboat.dtx| and \path|tugboat.ins|.
  When the\,\verb|.ins| file is processed by \LaTeX{}, the files
  \path|ltugboat.cls|, \path|ltugproc.cls| and \path|ltugbib.bst| (for
  ordinary production work) and \path|ltugcomn.sty| (a cooking pot of
  useful macros, for documentation, etc.)\ are produced.  The\,\verb|.dtx|
  file may itself be processed by \LaTeX{} to produce a formatted
  (somewhat `literate') source listing for those who feel they need
  more detailed description of the macros than is offered in the
  present note.
\end{sloppypar}

The \TUB\ web site is at \url{http://tug.org/TUGboat}.  It contains much
information for authors and reviewers, all the back issues, and plenty
more.  In particular, sample documents for both regular articles and
proceedings articles are available from \url{http://tug.org/TUGboat}.

\section{The general structure of a paper}

The author need not understand the details of the production of
\TUB{}\Dash her business is to produce the text that the editor is to
mould into the body of an issue.

However, any modern author wants to be able to view the progress of
her efforts; for this, she needs to use the \TUB{} class
\path|ltugboat.cls|\Dash it defines the way an article in a normal issue of
\TUB{} will appear, and is therefore a useful aid.

Similarly, one submitting a paper for presentation at an annual \tug{}
conference may use the \path|ltugproc.cls|, which will set the paper as it
should appear in a proceedings issue of \TUB{}.

Each paper, therefore, is written as a document that may stand on its
own.  It starts with a \cs{documentclass} command, and its body is
enclosed in a \envname{document} environment.  Each of the document
classes specifies a set of options, described in the next two
subsections (\ref{sec:boat-opts} and~\ref{sec:proc-opts}).  In the
ordinary course of events the author needn't bother with any of these
options, since the defaults are designed for creating proof copies of
papers.

Since the author typesets her paper in a `proof mode', the paper's
published appearance will differ from its appearance at the time of
submission.  The changes required in this process are the
responsibility of the \TUB{} production team, and the author need not
be concerned with them.

\subsection{Class options: the \clsname{ltugboat} class}
\label{sec:boat-opts}

The \clsname{ltugboat} class accepts all the options of the
\clsname{article} class (though it suppresses the font-size selection,
one/two-side and one/two-column options).
\begin{optlist}
\item[draft] Set up for a draft copy of a paper (this is the default
  setting\Dash the author need not explicitly set it): page numbering
  to start at 1001, black marks for overfull boxes.
\item[extralabel] Use the extra label-distinguishing mark in the body
  of the reference; see section~\ref{sec:biblio}.
\item[final] Set up for the final copy of a paper: page numbering to
  come from elsewhere, no black marks.
\item[harvardcite] Specify Harvard-style citation; see
  section~\ref{sec:biblio}.
\item[noextralabel] Don't use the extra label-distinguishing mark in
  the body of the reference; see section~\ref{sec:biblio}.
\item[nonumber] Sections are not to be numbered; section heading
  layout is to be as in the `plain' \pkgname{tugboat} styles.
\item[numbersec] Sections, subsections and subsubsections are to be
  numbered (this is the default setting\Dash the author need not
  explicitly set it).
\item[preprint] Set up for a preprint.

\item[rawcite] Specify default (unnumbered) citation; see
  section~\ref{sec:biblio}.
\end{optlist}

\subsection{Class options: the \clsname{ltugproc} class}
\label{sec:proc-opts}

The \clsname{ltugproc} class accepts all of the options allowed with
\clsname{ltugboat}.  In addition, it accepts an option that specifies
the year of the conference for which the paper is submitted.  For
example, the conference for \number\year\ would be specified by option
%
%% % although this paper will be published in 1996, it may be reprinted
%% % again in the future, so let's calculate `this year' on the fly
%% \newcount\y
%% \y\year
%% \divide\y100
%% \multiply\y100
%% \advance\y-\year
%% \y-\y
%
% from 2000 on, the option is just the year
\optname{tug\number\year}.  Such an option may be necessary if the
(detailed) type design of papers for the year's proceedings issue is
changed by the year's editor.  Unless ``instructions to authors''
say otherwise, authors should not specify such an option, and
\clsname{ltugproc} will choose an appropriate default.

The class reads a configuration file
\path|ltugproc.cfg|, in which you may specify the year by a command of
the form:
\begin{verbatim}[\small]
  \newcommand{\tugProcYear}{97}
\end{verbatim}

The class deals with two-digit year selections for conferences up to
2069 (which date was chosen entirely at random, uninfluenced, of
course, by the Unix\texttrademark Epoch\dots); however, the user
should not feel constrained to write such confusing dates since
\clsname{ltugproc} will cope with the full year number (4 digits, for
quite a while yet).

\section{Command syntax}
\label{sec:syntax}

We would have liked to offer perfectly uniform syntax for people to
use when preparing their papers.  Unfortunately, uniform syntax is not
available with any widely-available set of macros (though see, for
example, the discussions in \citeNP{Ogawa:TB15-3-325},
\citeNP{Baxter:TB15-3-331}, and \citeNP{Swift:TB16-3-269}).  In the
circumstances, we have sought simply to keep to the spirit of
Lamport's \citeyear{Lamport:1994}, as modified\footnote{The cited
  edition of Lamport's book documents the modified version of \LaTeX{},
  but it's worth emphasising that we use the modified version as the
  reference.} by the \LaTeXe{} work (see, for example,
\citeNP{Rowley:TB15-1-63}).

In the few cases that it has proved possible to emulate (what seems to
a staid old \LaTeX{} programmer, such as the present author) the gay
abandon of the syntax of the `plain' \pkgname{tugboat} styles
\cite{Whitney:TB10-3-378}, we have done.  Nevertheless, on the whole,
the new \clsname{ltugboat} macros simply define \LaTeX{} commands and
environments, or modify the definitions of \LaTeX{} `standard'
commands.  Section~\ref{sec:equiv} lists equivalences between macros
defined by the `plain' package and those defined by the new package.

The `down' side of this decision is, of course, the `welter of
\LaTeX{} braces' that Barbara Beeton has been heard to complain of in
production team discussions.  One has to hope that the (near)
uniformity of syntax offers those who think like Barbara some small
recompense!

\section{Divisions of the paper}
\label{sec:divs-paper}

Papers in \TUB{} may be subdivided in the normal way of a \LaTeX{}
article (the classes are defined in terms of \LaTeX{}'s
\clsname{article} class).  Thus the author may use \cs{section},
\cs{subsection}, \dots, \cs{paragraph} commands (but \cs{part} and
\cs{subparagraph} from \clsname{article} are suppressed, and
\cs{chapter}, which doesn't even appear in the parent class, receives
the same treatment).

Authors should note that the style of ordinary issues of \TUB{} makes
no distinction between the titles of the divisions; the visual style
relies on the section numbers to indicate where the divisions lie in
the hierarchy.  As a result, the un-numbered `\verb|*|' forms of the
\cs{section}, etc., commands, are inappropriate.  The
\clsname{ltugboat} class therefore warns the author who (possibly
inadvertently) uses one of these forms.  (The author who wishes to use
un-numbered sections throughout her paper may use the
\optname{nonumber} class option (see~\ref{sec:boat-opts}).

By contrast, whether or not sections are numbered in a conference
proceedings issues of \TUB{} is a matter of that year's editor's
choice (in collaboration with the \TUB{} team).  If sections are not
to be numbered, the use of `\texttt{*}' forms is inappropriate, and the
class equally warns the author.  Since the sections don't have
numbers, references to section numbers don't work; they therefore
(once they're resolved) warn the author of potential problems.

Reference may, however, be made to the `title' of divisions of the
paper, whether they are numbered or not.  The \cs{nameref} command
(which uses the technique developed for the \textsf{hyperref} package
\cite{Rahtz:hyperref:1997}) permits such references; for example, the
present section was introduced by:
\begin{verbatim}[\small]
  \section{Divisions of the paper}
  \label{sec:divs-paper}
\end{verbatim}
and the command \verb|\nameref{sec:divs-paper}| produces
`\nameref{sec:divs-paper}'.

\subsection{Abstracts}

The classes make provision for abstracts, but the provision is
different for the two classes.

The \clsname{ltugboat} class provides two environments, \envname{abstract}
and \envname{longabstract}.  The \envname{abstract} environment simply
typesets its body as an un-numbered section whose title is
`Abstract'.  The \envname{longabstract} environment typesets its body in
small text, and separates the abstract from the rest of the paper with
a decorative line.

The \clsname{ltugproc} class typesets abstracts as part of the title
of the paper, below the names and addresses of the authors, but before
the main body of the paper.  Therefore, for proceedings articles, the
\envname{abstract} environment must appear in the source of the paper
\emph{before} the \cs{maketitle} command (it may even appear before
\verb"\begin{document}", if the author so chooses).

\subsection{Appendices}

A paper may have appendices, which are expressed in exactly the same
way as they would be in the \LaTeX{} article class:

\begin{verbatim}[\small]
\appendix
\section{This is appendix A}
...
\section{This is appendix B}
\end{verbatim}
Which will produce `section' headings similar to:
\begin{quote}
\textbf{A\quad This is appendix A}
\end{quote}

\TUB{} articles may have a small extension to this format: this
extension was originally developed for proceedings issues, but is also
available in normal issues:

\begin{verbatim}[\small]
\begin{appendix}
\section{This is the first one}
...
\end{appendix}
\end{verbatim}
Which will produce `section' headings similar to:
\begin{quote}
\textbf{Appendix A\quad This is the first one}
\end{quote}

In both cases, the subsections are numbered as normal (i.e., as
`A.\ensuremath{n}' in normal \TUB{} papers, and not at all in
proceedings classes).

\section{Titles, addresses and so on}

The title and author(s) of a paper are quoted using commands that are
familiar (in syntax, at least) to most \LaTeX{} users; the \cs{title}
command is exactly that used in the standard \LaTeX{} classes.

The \cs{author} command is used once for each co-author of the paper,
and for each \cs{author} there should be a \cs{address} command that
gives a (postal) correspondence address.  In addition (wherever
possible), \TUB{} likes to quote an email address for authors: for
this, the \cs{netaddress} command is used.  Finally, each
author may advertise a `home' Web page, using a \cs{personalURL} command.

For example, the present paper has at its start:

\begin{verbatim}[\small]
\title{The New (\LaTeXe) \TUB{} Macros}
\author{Robin Fairbairns}
\address{University of Cambridge
    Computer Laboratory\\
  Pembroke Street,\\
  Cambridge, CB2 3QG,\\
  UK}
\netaddress{rf@cl.cam.ac.uk}
\personalURL{http://www.cl.cam.ac.uk/...}
\maketitle
\end{verbatim}

Since this paper is prepared for a normal issue of \TUB{} and
therefore uses the \clsname{ltugboat} class, the \cs{maketitle} merely
typesets the title of the paper and the author's name.  The
address(es) are typeset at the end of the paper where the author gives
a \cs{makesignature} command.

The \clsname{ltugproc} class typesets all the information about the
author at the head of the paper, when the \cs{maketitle} is given;
this class disallows the \cs{makesignature} command.

Note that the author had a problem typesetting the above example
verbatim: the lines are too long.  If the information being given is
to be typeset as ordinary text (as in the case of the \cs{address}
line above), it can be `wrapped' perfectly happily, as in normal text.
If one of the verbatim items (\cs{netaddress} or \cs{personalURL}
commands) is going to be too wide for the column, what is the author
to do?  (Abbreviating the text, as in the \cs{personalURL} above, is
\emph{not} usually an acceptable option!)  Unfortunately, the \verb|%|
sign is an entirely acceptable element of both email addresses and
\acro{URL}s, so that the normal `fall-back' isn't available.
Therefore, the classes typeset these electronic addresses in an
environment where some of the characters (notably `\verb|.|' and
`\verb|/|') are treated as word-divisions for the purposes of laying
out the line.  This is visible in the case of my personal \acro{URL},
in the signature block at the end of the present paper.

If the paper is the result of more than one author's labours, a sequence of
\cs{author}, \cs{address}, \cs{netaddress} and \cs{personalURL}
commands may be given, as in the following, which comes from a paper
given at \tug'95 (slightly edited):

\begin{verbatim}[\small]
\author{Michel Goossens}
\address{CN Division, CERN\\
  ...}
\netaddress{...}

\author{Sebastian Rahtz}
\address{Elsevier Science Ltd\\
  ...}
\netaddress{...}

\author{Robin Fairbairns}
\address{University of Cambridge
    Computer Laboratory\\
  ...}
\netaddress{...}
\personalURL{...}
\end{verbatim}

The class files will take care of arranging author names and addresses
between the \cs{maketitle} and (possibly) \cs{makesignature} commands.

\subsection{Compilation articles}

\begin{sloppypar}
  Compilation articles are built from a set of contributed parts, and
  are under the general (sub-)\penalty0\relax\hskip0pt plus0pt minus0pt\relax
  editorship of the author\footnote{Or authors: there's no reason in
    particular that compilation articles should not be put together
    by more than one person.} of the article.  The author of the article
  is presented (using \cs{author} and suchlike commands) in the usual
  way, and writes the introductory text.  Each contributors' part then
  follows.  The contributor's name is quoted in the \cs{contributor}
  command, which is an analogue of the \cs{author} command;
  contributors' \cs{address}, \cs{netaddress} or \cs{personalURL}.
  The \cs{contributor} command opens a group in which the contribution
  appears, and the contributor's signature (produced with a
  \cs{makesignature} command) closes the group.  The general scheme
  looks like:
\end{sloppypar}
\begin{verbatim}[\small\makeescape\|\makebgroup\[\makeegroup\]]
\title{Example compilation article}
\author{Robin Fairbairns}
\address{University of Cambridge ...}
\netaddress{...}
 ...
 |emph[introductory text]
 ...
\makesignature

\contributor{Betsy the Dog}
\address{Romsey Town, Cambridge}
 ...
 |emph[Betsy's contribution]
 ...
\makesignature

...
\end{verbatim}

\section{Verbatim text}
\label{sec:verbatim}

The classes do not at present provide the same wide range of
facilities as the `plain' \pkgname{tugboat} style
\cite{Whitney:TB10-3-378}; the author had hoped to `borrow' facilities
from a package which is believed to be in development, but in the
event that package has not materialised.

For in-line verbatim text, authors should ordinarily employ the
facilities of \LaTeX{} itself (the \cs{verb} macro).  This macro, of
course, is highly restricted as to its usage (primarily, that it may
not appear in the argument of \emph{any} other macro, even
\cs{footnote}).

For `display verbatim' (to employ the term used by
\citeANP{Whitney:TB10-3-378}), the classes add a small increment to
the functionality of \LaTeX{}'s \envname{verbatim} environment, by
introducing an optional argument.  The optional argument may contain
commands to be executed before starting the verbatim text; the set of
commands which have useful effect is strictly limited, but the
following are commonly used:
\begin{itemize}
\itemsep=0.2\itemsep
\item Font size selection commands: for example, all the display
  verbatim in the present paper starts with:
  
  {\small\verb| \begin{verbatim}[\small]|}
\item The command \cs{ruled}, which is available \emph{only} in
  \envname{verbatim}'s optional argument, and specifies that a
  column-wide rule should be drawn before and after the verbatim text
\item One of the \cs{make*} commands,\footnote{\cs{makeescape},
    \cs{makebgroup}, \dots, \cs{makecomment}; used, for example, as
    \cs{makeescape}\cs{|}} which change the category code of
  characters within the verbatim text.  This is (of course) a facility
  that should only be used with the utmost caution, but it can, for
  example, be employed to provide interesting effects by knowledgeable
  authors.
\end{itemize}
Two caveats about the use of this facility should be noted:
\begin{itemize}
\itemsep=0.2\itemsep
\item The search for the optional argument can be confused by the
  appearance of a \verb|[| character as the first of the displayed
  verbatim.  An author who wishes to start verbatim text with a
  \verb|[| character should provide an empty optional argument (i.e.,
  simply `\verb|[]|') to the \envname{verbatim} environment.
\item The facility is lost when certain packages are loaded.  An
  example is the \pkgname{verbatim} package
  \cite{Schoepf:verbatim:1996}, which redefines the \envname{verbatim}
  environment in its entirety.  Of course, any package that loads
  \pkgname{verbatim} (such as \pkgname{moreverb},
  \shortciteNP{Duggan:moreverb:1996}) will necessarily have the same
  effect.  (It should be noted that \pkgname{verbatim} and
  \pkgname{moreverb} provide some of the facilities that are available
  in the `plain' \pkgname{tugboat} styles, so that an author could
  reasonably be tempted to use them.  There is no objection in
  principle to authors using these packages.)
\end{itemize}

\section{Floating inserts}

The classes do not make any change to \LaTeX{}'s built-in provision
for floating inserts, so that authors may generate figures and tables
just as they would in any `normal' \LaTeX{} document.  Figure and
table captions, and labels referring to them, are also substantially
untouched.

However, since both classes typeset in two columns, authors must
distinguish between the \envname{figure} and \envname{table} environments
(which produce floats that are the same width as the column) and the
\envname{figure*} and \envname{table*} (which produce floats that are the same
width as the page).

%\begin{itemize}
%\item figures and tables as normal
%\item captions and labels work whatever (i.e., no restriction on
%  numbering)
%\item twocolumn setting implies distinction between \envname{figure} and
%  \envname{figure*} 
%\end{itemize}

\section{Special-purpose typesetting}

The classes define a rather large set of commands for special-purpose
typesetting.  Some of them are available for historical reasons only,
and many are only useful in somewhat restricted circumstances.  For
this reason, the present paper only outlines a representative, small
set of the macros.

\subsection{Acronyms and logos}

The classes provide macros that produce `correct' representations of a
large number of acronyms and logos; a small representative selection is
shown in figure~\ref{fig:acro-logo}.  The sample documents at
\url{http://tug.org/TUGboat/location.html} have a more complete list,
and of course the class sources are the ultimate reference.
\begin{figure}[htbp!]
  \begin{center}
    \begin{tabular}{@{}ll@{}}
      \small\textsl{\textsf{Macro}}&\small\textsl{\textsf{Output}}\\
      \midrule
      \verb|\ConTeXt|   & \ConTeXt \\
      \verb|\Cplusplus| & \Cplusplus \\
      \verb|\CTAN|   & \CTAN \\
      \verb|\eTex|   & \eTeX \\
      \verb|\FAQ|    & \FAQ \\
      \verb|\HTML|   & \HTML \\
      \verb|\ISBN|   & \ISBN \\
      \verb|\ISSN|   & \ISSN \\
      \verb|\MacOSX| & \MacOSX \\
      \verb|\MathML| & \MathML \\
      \verb|\MF|     & \MF \\
      \verb|\MP|     & \MP \\
      \verb|\NTS|    & \NTS \\
      \verb|\OMEGA|  & \OMEGA \\
      \verb|\OTP|    & \OTP \\
      \verb|\PDF|    & \PDF \\
      \verb|\SGML|   & \SGML \\
      \verb|\TUB|    & \TUB \\
      \verb|\TUG|    & \TUG \\
      \verb|\tug|    & \tug \\
      \verb|\XML|    & \XML \\
    \end{tabular}
  \end{center}
  \caption{A few of the classes' acronyms and logos}
  \label{fig:acro-logo}
\end{figure}

Authors are especially urged to note the \cs{acro} command, which is
defined in the classes.  The visual appearance of (mostly) lower-case
English text, with interpolated acronyms in the same point size, is
generally unpleasing.  Therefore, the \cs{acro} command typesets its
argument slightly smaller than it would otherwise appear: compare
`\acro{URL}' (\verb|\acro{URL}|, as used above) with `URL'\@.  Many
macros that simply generate calls to \cs{acro} are defined by the
classes; two examples, \cs{CTAN} and \cs{tug} of the list in
figure~\ref{fig:acro-logo} have already been used in the present paper.

\subsection{Other special typesetting}

A small list of special typesetting commands follows: a large set of
such commands is defined in the classes, but the list covers most of
the `everyday' ones.
\begin{cmdlist}
\item[\cs{cmd}] Typeset a control sequence name.  (The command
  \verb|\cs{fred}| is typeset as \cs{fred}.)
\item[\env{environment}] Typeset an environment name as if at the
  start of the environment.  (The command \verb|\env{fred}| is typeset
  as \env{fred}.)
\item[\meta{arg}] Typeset a formal argument name.  (The command
  \verb|\meta{fred}| is typeset as \meta{fred}.)
\item[\Dash] Typeset an em-dash, surrounded by thin spa\-ces, only
  breakable \emph{after} the dash; this is the preferred method of
  specifying a dash in running text.
\item[\dash] Typeset an en-dash, in the same way as \cs{Dash} does.
\item[\nth{n}] Typeset an ordinal number.  For example, \verb|\nth{1}| is
  set as \nth{1}, \verb|\nth{27}| is set as \nth{27}, and so on.
\item[\sfrac{num}{denom}] Typeset a fraction to match running text;
  for example \verb|\sfrac{3}{4}| is set as \sfrac{3}{4}\,.
\end{cmdlist}

\section{Use of packages}

In general, the \TUB{} team will be sympathetic to authors who wish to
use non-standard packages in their papers; indeed, in a journal
devoted to the usage of \TeX{}, the editor would be churlish indeed to
refuse such usage.  However, the team does need to be able to process
the paper on the \TUB{} production computers, and the author who is
slapdash about the way she submits her paper will cause confusion and
delay.  (Remember that the editorial team is a group of volunteers,
each working in his or her spare time.)

In general, packages currently on \CTAN, and known to work with
\emph{current} \LaTeX{},\footnote{The team's version of \LaTeX{} is
  regularly updated, though not during the course of a production
  run.} are unlikely to give problems.

In particular, the team is happy to accept papers using packages
that are supported by members of the \LaTeX3 team,\footnote{%\raggedfoot
  Those in the \LaTeX{} base distribution, or one of those on the
  \CTANref{packages} sub-tree on \CTAN.} subject to the two provisos:
\begin{itemize}
\itemsep=0.2\itemsep
\item Use of the \pkgname{verbatim} package has implications for the
  \envname{verbatim} facilities provided by the classes\Dash see
  section~\ref{sec:verbatim}.
\item Use of \pkgname{babel} almost inevitably implies use of
  hyphenation patterns that the team may not have installed in their
  \LaTeX{} format; it is therefore important that the author explains
  her \pkgname{babel} configuration to the editorial team.  The
  minimum documentation required is a copy of the author's
  \url{language.dat} file, and copies (or \CTAN{} pointers to) any
  hyphenation files used.
\end{itemize}

Usage of other packages should always be subject to negotiation with
the team.  If the team does not have access to a copy of the package,
life is going to be very difficult; authors are urged to be sensible
in this regard.  A sensible mechanism for submitting
out-of-the-ordinary packages (as for paper-specific bibliographies) is
by use of the \envname{filecontents} environment.

\cbstart
\tug{} has a policy that macro packages described in \TUB{} should be
available for readers to use.  Since typing macros from printed
sources is such an error-prone undertaking, authors of publicly
available packages are urged to submit their macros to the \CTAN{}
archives.  If a package is only available under restricted terms,
authors are urged to make this fact clear when first submitting an
article to the editor.
\cbend

Some facilities are considered inappropriate to delivery by the
\TUB{} classes, and as a result, the \TUB{} team recommend certain
packages to authors.

At present, the list of recommended packages consists of only two,
\path|mflogo.sty| \cite{Vieth:mflogo:1995} and \path|url.sty|
\cite{Arseneau:url:1996}.

Both classes will load the \pkgname{mflogo} package if it is present on the
author's system; if the package is not present, the classes will
emulate its more important features; the package defines \MF{} and
\MP{} logos using recent versions of Knuth's \verb|logo10| font family.

The \pkgname{url} package is useful when one is typesetting significant
numbers of file names, network addresses or \acro{URL}s; it is being
used in the present paper (not least in the bibliography).

\section{Bibliography}
\label{sec:biblio}

Bibliographic citations give much grief to the editorial team.  Good
publishing practice requires that there be editorial control of the
way citations in a journal are presented yet, all too often, authors
submit articles whose bibliography is formatted according to their
preference.  The important rules for authors, then, are that they
\emph{shouldn't} supply a \verb|.bbl| file (\BibTeX{} processed output),
and that they \emph{shouldn't} write out a \envname{thebibliography}
environment, but should rather submit a working \verb|.bib| file with their
paper.\footnote{The program \progname{bibextract}, available from
  \CTAN{} in directory \CTANref{bibextract}, provides a convenient
  mechanism for extracting just the relevant portions of your
  bibliography database for submitting your paper; many of the common
  \BibTeX{}-database management packages, such as \textsc{BibDB} or
  \textsc{Bib}Tools offer similar facilities.} As with uncommon
packages, the \envname{filecontents} environment is a convenient way to
deliver the bibliography file.

A special case is made of the accumulated bibliography of \TUB{}
itself;\footnote{\raggedfoot Available on \CTAN{} as
  \CTANref{tub-biblio}} it is always available to the production team,
so that authors may make reference to items from that \verb|.bib| file
without further ado.

Two citation styles are supported within \TUB{} articles, `\emph{raw}'
and `\emph{harvard}' (the present article is employing \emph{harvard}
citation).  The raw citation style uses the `standard'
\BibTeX{} `\pkgname{plain}' (numeric) citation style; its modification
by use of Donald Arseneau's \pkgname{cite}
package\footnote{\raggedfoot Available on \CTAN{} as \CTANref{cite}}
is acceptable.  Raw citation is selected by default (by execution of
class option \optname{rawcite}).

Harvard citation may be selected by specifying \optname{harvardcite} as an
option of the \cs{documentclass} command.  The macros used derive
pretty directly from the \textsl{\pkgname{harvard}} styles written by Glenn
Paulley and now maintained by Peter Williams; the \BibTeX{} style
derives from one developed by Patrick Daly.

The basic citation format is `author-year', but the macros are capable
of many variations: this in turn places somewhat of a load on the
author to use the correct citation macro.  The macros available are
shown in figure~\ref{fig:citation-macros}; the figure assumes an entry
in the bibliography with authors Tom, Dick, and~Harry, and with a
1990 date.

\begin{figure}[htbp!]
  \begin{center}
    \leavevmode
    \begin{tabular}{@{}ll@{}}% @{ $\rightarrow$ } between columns removed
      \small\textsf{\textsl{Macro}} &\small\textsf{\textsl{Output}}\\
      \midrule
      \verb|\cite{key}|       & (Tom, Dick, and Harry, 1990)\\
      \verb|\citeA{key}|      & (Tom, Dick, and Harry)\\
      \verb|\citeNP{key}|     & Tom, Dick, and Harry, 1990\\
      \verb|\citeANP{key}|    & Tom, Dick, and Harry\\
      \verb|\citeN{key}|      & Tom, Dick, and Harry (1990)\\
      \verb|\shortcite{key}|  & (Tom et al., 1990)\\
                              & [also has \texttt{A} and \texttt{NP}
                                 variants]\\
      \verb|\citeyear{key}|   & (1990)\\
                              & [also has an \texttt{NP} variant]
    \end{tabular}
  \end{center}
  \caption{The range of citations in \optname{harvard} style}
  \label{fig:citation-macros}
\end{figure}

Note that, if Tom, Dick, and Harry are a prolific team, there can
easily be more than one reference to their work in one year.  In such
a case, the citations will be (Tom, Dick, and Harry, 1990a), (Tom,
Dick, and Harry, 1990b), and so on.  These extra `a', `b', etc., tags
may also appear in the references section of the paper, attached to
the year recorded for the reference: whether this indeed happens is
controlled by the \optname{extralabel} and \optname{noextralabel} class
options.  The default state (option \optname{extralabel}) attaches the
extra characters.

Bibliographies provide further problems because they're notoriously
difficult to typeset at the best of times.  \LaTeX{} sets \cs{sloppy}
when typesetting the bibliography, but this can often lead to pretty
unpleasant output in the narrow columns typical of \TUB{}.  The author
may control the typesetting using the command
\cs{SetBibJustification}.  The classes set \cs{sloppy}, by default
(just like \LaTeX{}), but the author may (for example) say:
\begin{verbatim}
  \SetBibJustification{\raggedright}
\end{verbatim}
as the present article does, to achieve somewhat better results.

\section{Equivalences between the `plain' and the \LaTeX{} packages}
\label{sec:equiv}

A good proportion of the commands in the `plain' packages also appear
(with the same meaning) in the \LaTeX{} classes.
Figure~\ref{fig:plain-equiv} gives a brief summary of where the macros
differ significantly.

\begin{figure}[htbp]
  \begin{center}
    \leavevmode
    \begin{tabular}{@{}ll@{}}
      \small\textsf{Plain macro} & \small\textsf{\LaTeX{} macro} \\
      \midrule
      \cs{head} & \cs{section} \\
      \cs{subhead} & \cs{subsection} \\
      \cs{subsubhead} & \cs{subsubsection} \\
      \cs{list} & \envname{itemize}, \envname{enumerate}, etc., \\
                & environments \\
      \cs{verbatim} & \envname{verbatim} or \cs{verb} \\
      \cs{figure}   & \envname{figure} or \envname{figure*} environments \\
    \end{tabular}
  \end{center}
  \caption{Equivalences between \pkgname{plain} and \LaTeX{} macros}
  \label{fig:plain-equiv}
\end{figure}

\LaTeX{} itself makes comprehensive provision for lists; the \TUB{}
classes make no attempt to emulate the list facilities of the `plain'
macros.

The `plain' styles' provision for verbatim text is also somewhat
different from the \LaTeX{} approach; the \TUB{} classes offer a small
subset of the extra facilities that the `plain' styles provide; for
more elaborate facilities, the user is referred to the
\pkgname{verbatim} and \pkgname{moreverb} packages (see
section~\ref{sec:verbatim}).

Of course, the syntax of commands given to the \LaTeX{} classes is
different (as discussed in section~\ref{sec:syntax}); arguments are
(almost always) enclosed in braces, and neither of the forms of
argument provision promulgated by the `plain' macros
(\cs{macro}\meta{argument}\linebreak[0]\cs{endmacro} and
\cs{macro * }\meta{argument}\verb| *|) are provided by the \LaTeX{}
classes.

%\EdNote[Should I mention the lack of \cs{every*} token registers (for
%all sorts of instances of \texttt{*}?)]

\SetBibJustification{\raggedright}
\bibliography{tubguide}

\makesignature

\end{document}