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%%
%% This is file `ams-author-handbook-doc.tex'
%%
%% Copyright 2017 American Mathematical Society.
%% 
%% American Mathematical Society
%% Technical Support
%% Publications Technical Group
%% 201 Charles Street
%% Providence, RI 02904
%% USA
%% tel: (401) 455-4080
%%      (800) 321-4267 (USA and Canada only)
%% fax: (401) 331-3842
%% email: tech-support@ams.org
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% 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 1.3c or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%% 
%% This work has the LPPL maintenance status `maintained'.
%% 
%% The Current Maintainer of this work is the American Mathematical
%% Society.
%% 
%% ========================================================================
\documentclass{amsart}

% The option [openright] is used in the macro set, which assumes the use
% of amsbook; it is not provided by amsart, so set it up here.
\makeatletter
\newif\if@openright
\makeatother

% Use the same macros applied to the Handbooks.
\usepackage{ahandinstr-r}

% test redefinition to get \tt underscore
%\catcode`\_=12
\renewcommand{\fn}[1]{{\def\_{\ttfamily\char`\_}%
  \mbox{\texttt{\ignorespaces#1\unskip}}}}
%\catcode`\_=8

% Replace \scshape in section headings to preserve file names.
\makeatletter
\renewcommand{\section}{\@startsection{section}{1}%
  \z@{.7\linespacing\@plus\linespacing}{.5\linespacing}%
  {\normalfont\bfseries\centering}}
\makeatother
\setcounter{secnumdepth}{0}

\newcommand{\BibTeX}{\textsf{Bib\!\TeX}}
\newcommand{\XeTeX}{\textsf{Xe\TeX}}

\begin{document}
\title{Compiling the AMS Author Handbooks from~a~complex source}
\author[AMS Technical Support Group]%
  {AMS Technical Support Group\\Version 1.0, September 2017}

\begin{abstract}
 Publications of the American Mathematical Society (AMS) are of several
 types, each based on an AMS-specific document class.  Manuscripts are
 prepared by authors and (after editorial acceptance) are submitted to
 the Society's production department where they are processed for
 printing and publication.

 In order to make this process as painless as possible for both authors
 and production staff, instructions for authors---the AMS Author
 Handbook---has been created in separate versions, one for each type of
 publication.  Author instructions are in large part common to all
 publication types, with specific additions or variations as needed.
 The core material is contained in one large \LaTeX\ file, with variant
 material selected on the basis of binary switch settings, either from
 embedded options or pulled in from subsidiary files.  Creation and
 management of that exercise is the subject of this overview.
\end{abstract}
\maketitle

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{Introduction}
\label{sec:intro}
The purpose of the present document is to explain how a four-version
user manual is generated from a ``single'' source, consisting of a
core central text, modified by or augmented with product-specific
material provided by command-specified variants or additional files
addressing specific topics.  The manual(s) being described are entitled
``AMS Author Handbook'', and will be referred to collectively here as
the ``Handbooks''.

This overview is directed toward \latex/ users who are already familiar
with the general mechanics of developing packages and writing the
associated documentation.

AMS publications fall into four types, each based on an AMS-specific
document class:
\begin{itemize}
\item Journals: articles use the \cls{amsart} document class.
\item Monographs and textbooks: \cls{amsbook} defines the core style,
 with variations---sometimes extensive---provided in the form of
 series-specific document classes.
\item Proceedings and similar collections: articles are prepared using
 \cls{amsproc} or a series-specific variation.  There is no attempt to
 process a complete volume as a unit; articles are processed separately
 and combined later from individual \fn{pdf} files.  Front matter is
 also prepared separately using a dedicated \cls{editor} class, which
 will not be further discussed here.
\item \Memos: this is a hybrid series with individual units based on
 \cls{amsbook} with modifications; it is treated as a subscription
 journal for distribution.  (The name \Memos\ is the formal title of
 the publication, and each individual issue is referred to in the
 singular form.)
\end{itemize}

\newpage

The four variations of the Handbook are launched by separate ``driver''
files, each of which contains only the few instructions necessary to
set the scene:
\begin{trivlist}
\item\relax
\leftskip=2\normalparindent
\verb+\documentclass+\\
\verb+%  [openany]  %+\qquad
  The \texttt{openany} option may be used for screen viewing.\\
\verb+  {amsbook}+\\
\verb+\usepackage{ahandinstr-r}+\\
\verb+\setboolean{+\<document type>\verb+}{true}+\\
\verb+\input{Author_Handbook_Body}+\\
\verb+\end{document}+
\end{trivlist}

The components are described in the following sections.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{The macro package:
 \texorpdfstring{\fn{ahandinstr-r.sty}}{ahandinstr-r.sty}}
This collection of macros provides commands for selecting the document
type and formatting the contents.

Document type selection is controlled by two types of commands: binary
switches (a.k.a.\ ``booleans'') and macros with arguments.  The latter
are defined based on the switches for making the desired selection, and
in turn are most often used to select small text strings or to pull in
subsidiary files.  Here are a couple of examples, with typical uses.
\begin{verbatim}|leftskip=2|normalbaselineskip
\newcommand{\jmp}[3]{%
        \ifjournal #1\fi
        \ifmonograph #2\fi
        \ifproceedings #3\fi
}
\jmp{\input J-Series}{\input M-Series}{\input PC-Series}

\newcommand{\notmonograph}[1]{%
        \ifmonograph
        \else #1\fi
}
\item Do not use \textbf{author-defined macros} in author names,
 titles, \notmonograph{abstract, }%
 section and theorem headings, or references;
\end{verbatim}
Choice of a boolean or macro has been based on what seemed to be most
robust and easy to maintain as the document was written or updated.

It is also possible to tailor the output for printing or reading online.
The default formatting option for \cls{amsbook} is \opt{openright}; that
is, start every chapter on a right-hand page.  But the resulting blank
pages are a distraction for online reference, so \opt{openany} can be
specified if that is the expected use.  This option had already been
applied selectively to the handbooks, to force the two-page table of
contents onto a page span, and for all but the monographs version (which
has a two-page introduction) to run the introduction in on the otherwise
blank page following the contents.  To permit this exception, while
retaining the ability to follow the intended document-wide formatting,
an internal option, \cn{if@openany}, has been added.

The subject macro package has been used in compiling the present document
in order to maintain a consistent format.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{Files composing the Author Handbook complex}

The four versions of the Handbook are produced by separate driver files,
already described in the introduction, on page~\pageref{sec:intro}.
\begin{itemize}
\item \fn{Author\_Handbook\_Journals.tex}
\item \fn{Author\_Handbook\_Mono.tex}
\item \fn{Author\_Handbook\_ProcColl.tex}
\item \fn{Author\_Handbook\_Memo.tex}
\end{itemize}

The macro package responsible for styling the contents,
\fn{ahandinstr-r.sty}\,, has also been described above.

A single file, \fn{Author\_Handbook\_Body.tex}, contains the main content;
see page~\pageref{sec:body}.

One version of the Handbook covers only a single publication, \Memos;
the coverage of the other three is provided as three separate lists,
each in its own file to permit easy updates:
\begin{itemize}
\item \fn{J-Series.tex}
\item \fn{M-Series.tex}
\item \fn{PC-Series.tex}
\end{itemize}

Each version of the Handbook contains a list of requirements tailored
for the specific type of publication:
\begin{itemize}
\item \fn{J-Checklist.tex}
\item \fn{M-Checklist.tex}
\item \fn{PC-Checklist.tex}
\item \fn{Mem-Checklist.tex}
\end{itemize}
Since many checklist items are identical in more than one version, they
are defined as token strings.  A name is assigned to each token string
by the \cn{newtoks} command, in the macro file.  The (variant) texts are
defined in the body, just before the section in which each is to be used;
only the token string name appears in the input text.

The content of a publication's top matter differs by publication type,
so the details are provided in separate files:
\begin{itemize}
\item \fn{TopMatterTags\_J.tex}
\item \fn{TopMatterTags\_M.tex}
\item \fn{TopMatterTags\_PC.tex}
\item \fn{TopMatterTags\_Mem.tex}
\end{itemize}

The requirements for graphics are common to all types of publications,
but a different author is responsible for this material, so the text
is in a file by itself.  Several illustrations are present as \fn{.eps}
files, with equivalent \fn{.pdf} versions.
\begin{itemize}
\item \fn{Graphics\_Guidelines.tex}
\item \fn{Color2Gray.eps} / \fn{Color2Gray.pdf}
\item \fn{gamuts.eps} / \fn{gamuts.pdf}
\item \fn{rgb-cmyk.eps} / \fn{rgb-cmyk.pdf}
\item \fn{spectrum.eps} / \fn{spectrum.pdf}
\end{itemize}

Finally, two chapters dealing with procedures and the bibliography
complete the collection.  That they are in separate files is an
accident of history.
\begin{itemize}
\item \fn{Submitting2AMS.tex}
\item \fn{ResourcesHelp.tex}
\item \fn{AH\_Bibliography.tex}
\end{itemize}

Total distinct files in the collection making up the Handbooks: 29.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{The main text file:
\texorpdfstring{\fn{Author\_Handbook\_Body.tex}}{Author\_Handbook\_Body.tex}}
\label{sec:body}

This file contains the bulk of the text.

If a difference between versions is small (e.g., a few words), or can
be represented by a compact instruction (e.g.,
\verb+\input{+\<file name>\verb+}+, a macro with arguments denoting the
requisite version(s) is used.

If the difference is extensive---more than one paragraph is changed or
variations are nested---the boolean \cn{if} commands are used directly.

An effort has been made to avoid repetition, sometimes at the cost of
input coding that is more complex than desirable.  The reason for this
choice is the high probability that duplicated content could be
overlooked when updates are made.  In the case of an instruction manual,
this can affect a large number of users and result in unnecessary
questions, whereas getting the input coding right usually depends on
only one person or a small group.

Rather than showing involved examples here, it is more instructive to
look at the actual files.  Some examples of varying complexity can be
found following these lines: \verb+\chapter{Introduction}+ and
\verb+\subsection{indexing}+.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{Rationale for determining segmentation}

As hinted at earlier, the decision to include material in a single file
or multiple files is based on several factors.

For the project described here, the use of several independent driver
files makes it possible to preserve the output for all versions while
working on only one of them.  It also makes identification of the
different versions straightforward, since the appropriate version name
is permanantly associated with each.

Segregation of project-specific macros in a dedicated style file
(loaded with \cn{usepackage}) brings such benefits as the ability to
use ``internal'' control sequence names without having to bother with
\cn{makeatletter} and the like.

Development and maintenance of the content can easily be divided among
multiple authors if it is possible to \cn{input} or \cn{include} it.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{Environmental considerations affecting this document}

The AMS production environment in great measure affects what is described
in the Handbooks, and indeed in the present document as well.  The AMS
published more than 60,000 pages in 2016 from \LaTeX\ input.  To support
an operation of this size, automation and consistency of input are key
considerations.

The principal engine used for AMS production is \textsf{pdflatex}, with
\fn{dvi} output for print and \fn{pdf} output for online posting.  This
supports the essential requirements that line and page breaks must be
identical in the two forms of a paper or book, and also that hyperlinks
must be accurately placed in the electronic version.

A third requirement is the ability to perform automated checking of
graphics, which are becoming increasingly common in mathematical
publications.  This is, so far, all but impossible once a document is in
pdf form; as a former member of the AMS technical support group once put
it, ``In a \fn{pdf} file, everything is just hamburger.''  A line in a
graph is no longer distinguishable from many other features in the file,
and it is not always possible even to isolate the content of a graphic
from the surrounding text.  A graphic in a separate file, along with the
sizing information in the \fn{dvi} file, can be processed by a script to
determine (among other things) line thickness (color-adjusted if
necessary), font size, and color usage (RGB vs.\ CMYK), and only those
graphics containing a questionable element are flagged for review by a
human.

Another production decision of long standing is to use the Computer
Modern fonts.  Again, there are exceptions, but they must be given
special handling; processing of documents using the STIX fonts will
require the use of \XeTeX, and the infrastructure necessary for that
change is being developed.  (\textsf{LuaLaTeX} has, until recently, been
too unstable to consider for production use; even now, consistency and
backward compatibility are not guaranteed, but the time may have come to
study the possibility.)

Bibliography processing is supported only for \BibTeX\ and \pkg{amsrefs};
for journals and proceedings papers, bibliography input is normalized to
\pkg{amsrefs}, drawing ``standard'' coding and content from the
MathSciNet database.  \pkg{amsrefs} was developed and adopted as an
alternative to \BibTeX\ before the creation of \pkg{biblatex}, and the
(rather extensive) effort to provide support for \pkg{biblatex} was
therefore never undertaken.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{Reporting problems}

Inaccuracies or other problems in either this overview or in the various
files that make up the Handbook complex can be reported to the AMS
technical support group by email, to \texttt{tech-support@ams.org}\,.
Please specify ``Author Handbook'' as the subject.  Suggestions for
improvement are welcome as well.

\end{document}