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-%% ****** Start of file authguide.tex ****** %
-%%
-%%   This file is part of the APS files in the REVTeX 4 distribution.
-%%   Version 4.2b of REVTeX, January 2019
-%%
-%%   Copyright (c) 2019 The American Physical Society.
-%%
-%%   See the REVTeX 4.2 README file for restrictions and more information.
-%%
-\listfiles
-\documentclass[%
-,aps%
- ,twocolumn%
- ,secnumarabic%
-,amssymb, amsmath,nobibnotes, aps, prl, floatfix]{revtex4-2}
-\usepackage{docs}%
-\usepackage{bm}%
-\usepackage[colorlinks=true,linkcolor=blue]{hyperref}%
-%\nofiles
-\expandafter\ifx\csname package@font\endcsname\relax\else
- \expandafter\expandafter
- \expandafter\usepackage
- \expandafter\expandafter
- \expandafter{\csname package@font\endcsname}%
-\fi
-
-\begin{document}
-
-\title{\revtex~4.2 Author's Guide}%
-\author{American Physical Society}%
-\email{revtex@aps.org}
-\affiliation{1 Research Road, Ridge, NY 11961}
-\date{December 2018}%
-\maketitle
-\tableofcontents
-\clearpage
-\section{Introduction}
-
-This is the author's guide to \revtex~4.2, the preferred submission
-format for all APS and AIP journals. This guide is intended to be a concise
-introduction to \revtex~4.2. The documentation has been separated out
-into smaller units to make it easier to locate essential
-information.
-
-The following documentation is also part of the \revtex~4.2
-distribution. Updated versions of these will be maintained at
-the \revtex~4.2 homepage located at \url{http://journals.aps.org/revtex/}.
-\begin{itemize}
-\item \textit{APS Author Guide for \revtex~4.2}
-\item \textit{Author's Guide to AIP Substyles for \revtex~4.2}
-\item \textit{\revtex~4.2 Command and Options Summary}
-\end{itemize}
-This guide assumes a working \revtex~4.2
-installation. Please see the installation instructions included with the
-distribution.
-\subsection{Changes in \revtex~4.2}
-The \revtex\ system for \LaTeX\ began its development in 1986 and has gone through three major revisions since then.  \revtex~4 was released in August, 2001. Since that time, many user requests for new features were received. These requests were taken care of in the \revtex~4.1, which was released in August, 2010. \revtex~4.2 is the current release.
-
-\revtex~4.2 incorporates the following changes:
-
-\begin{itemize}
-\item \textbf{Added support for additional APS journals,  \textit{Physical Review X},  \textit{Physical Review Accelerators and Beams}, \textit{Physical Review Applied}, \textit{Physical Review Fluids}, \textit{Physical Review Materials}, and \textit{Physical Review Physics Education Research}.} There are new options \texttt{prx},  \texttt{prab}, \texttt{prapplied}, \texttt{prfluids}, and \texttt{prmaterials}, and \texttt{prper}.
-
-\item \textbf{Added a unified \texttt{physrev} option for \textit{Physical Review} journal style (the \textit{Phys. Rev.} journals have no or few variations).}
-
-\item \textbf{The \texttt{prb} option now conforms with \textit{Physical Review B}'s updated style that uses the same non-superscripted citations as other APS journals}.
-
-\item \textbf{Added support for additional AIP journals, \textit{AIP Advances}, \textit{Applied Physics Letters Materials}, and \textit{Structural Dynamics} as well as \textit{AIP Conference Proceedings}. There are new options \texttt{adv}, \texttt{apm}, \texttt{sd}, and \texttt{cp}.}
-
-\item \textbf{Added support for the  Society of Rheology (\texttt{sor}) and its journal, \textit{Journal of Rheology} (\texttt{jor}).}
-
-\item \textbf{The \texttt{reprint} style for AIP's journal JMP was changed to one-column formatting.}
-
-\item \textbf{For all APS journal options, complete article titles are now displayed in bibliography entries citing journal articles when using Bib\TeX\ by default.}
-
-\item \textbf{In the \textit{Phys. Rev.} Bib\TeX\ style file, article titles in the bibliography are set in roman font}.    
-
-\item \textbf{The behavior of the \texttt{noeprints} option has been improved}.    
-
-\item \textbf{Support has been added for citing data sets in the Bib\TeX\ styles}.
-
-\item \textbf{Support for citing journals that use a DOI instead of pages or article identifiers has been improved (for APS \textit{Phys. Rev.} Bib\TeX\ style)}.
-
-\item \textbf{The indentation of tables of contents have been improved}.
-
-\item \textbf{The \texttt{onecolumn} option no longer defaults to creating a separate title page}.
-
-\item \textbf{The \texttt{showpacs} option is completely ignored now}.
-
-\item \textbf{A bug when using \texttt{booktabs.sty} has been fixed}.
-
-\item \textbf{The formatting of references for some commonly cited journals has been improved in the \textit{Phys. Rev.} Bib\TeX\ style}.
-
-\item \textbf{URLs generated for DOIs now use \texttt{https://doi.org/} as the base in the Bib\TeX\ styles.}
-
-\item \textbf{URLs generated for arXiv.org e-print identifiers now use \texttt{https://arXiv.org/abs/} as the base in the Bib\TeX\ styles.}
-
-\end{itemize}
-
-\subsection{\revtex~4 Backwards Compatibility}
-Documents prepared under \revtex~4 and \revtex~4.1 should process correctly under \revtex~4.2. However, the formatting of the pages and, if using Bib\TeX, the references may change. Under 4.2, articles typeset with the \texttt{prb} option will be typeset \texttt{cite} commands differently and adjacent punctuation may need to be moved accordingly. Default behaviors some other options may also have changed as described above.
-
-
-
-\subsection{Submitting to APS Journals}
-
-Authors using \revtex~4.2 to prepare a manuscript for submission to
-\textit{Physical Review Letters}, \textit{Physical Review},  \textit{Reviews of Modern Physics}, 
-or other APS journals must also read the companion document \textit{APS Author Guide for \revtex~4.2}
-distributed with \revtex\ and follow the guidelines detailed there.
-
-The \revtex~4.2 distribution includes both a template
-(\file{apstemplate.tex}) and a sample document (\file{apssamp.tex}).
-The template is a good starting point for a manuscript. In the
-following sections are instructions that should be sufficient for
-creating a paper using \revtex~4.2.
-
-Further information about submissions to the American
-Physical Society may be found at \url{http://journals.aps.org/revtex/}.
-
-\subsection{Submitting to AIP Journals}
-
-\revtex~4.2 includes support for the journals of the American Institute of Physics.
-The style files and authoring guides for these journals are distributed as part
-\revtex~4.2 distribution. The distribution includes both a template
-(\file{aiptemplate.tex}) and a sample document (\file{aipsamp.tex}).
-The template is a good starting point for a manuscript. In the
-following sections are instructions that should be sufficient for
-creating a paper using \revtex~4.2.
-
-
-
-More information may be found at 
-\url{http://publishing.aip.org/authors/preparing-your-manuscript}. Please consult the \textit{Author's Guide to AIP Substyles for \revtex~4.2} for more information about submissions to AIP journals, AIP styles files, and other AIP-specific information.
-
-\subsection{Contact Information}\label{sec:aipresources}%
-Any bugs, problems, or inconsistencies with \revtex\ or the APS journal style files should be reported to
-\revtex\ support at \verb+revtex@aps.org+. Reports should include information on the error and a \textit{small}
-sample document that manifests the problem if possible (please don't send large files!). Issues related to the AIP journal styles should be sent directly to \verb+tex@aip.org+.
-
-\section{Some \LaTeXe\ Basics}
-\revtex~4.2 must sometimes patch the underlying
-\LaTeX\ kernel. This means that \revtex~4.2 requires a fairly recent version of
-\LaTeXe. Versions prior to 2005/12/01 may not work
-correctly. \revtex~4.2 will be maintained to be compatible with future
-versions of \LaTeXe.
-
-\subsection{Useful \LaTeXe\ Markup}
-\LaTeXe\ markup is the preferred way to accomplish many basic tasks.
-
-\subsubsection{Fonts}
-
-Because \revtex~4.2 is based upon \LaTeXe, it inherits all of the
-macros used for controlling fonts. Of particular importance are the
-\LaTeXe\ macros \cmd{\textit}, \cmd{\textbf}, \cmd{\texttt} for changing to
-an italic, bold, or typewriter font respectively. One should always
-use these macros rather than the lower-level \TeX\ macros \cmd{\it},
-\cmd{\bf}, and \cmd{\tt}. The \LaTeXe\ macros offer
-improvements such as better italic correction and scaling in super-
-and subscripts for example. Table~\ref{tab:fonts}
-summarizes the font selection commands in \LaTeXe.
-
-\begin{table}
-\caption{\label{tab:fonts}\LaTeXe\ font commands}
-\begin{ruledtabular}
-\begin{tabular}{ll}
-\multicolumn{2}{c}{\textbf{Text Fonts}}\\
-\textbf{Font command} & \textbf{Explanation} \\
-\cmd\textit\marg{text}  & Italics\\
-\cmd\textbf\marg{text}  & Boldface\\
-\cmd\texttt\marg{text}  & Typewriter\\
-\cmd\textrm\marg{text}  & Roman\\
-\cmd\textsl\marg{text}  & Slanted\\
-\cmd\textsf\marg{text}  & Sans Serif\\
-\cmd\textsc\marg{text}  & Small Caps\\
-\cmd\textmd\marg{text}  & Medium Series\\
-\cmd\textnormal\marg{text} & Normal Series\\
-\cmd\textup\marg{text}  & Upright Series\\
-  &\\
-\multicolumn{2}{c}{\textbf{Math Fonts}}\\
-\cmd\mathit\marg{text}  & Math Italics\\
-\cmd\mathbf\marg{text}  & Math Boldface\\
-\cmd\mathtt\marg{text}  & Math Typewriter\\
-\cmd\mathsf\marg{text}  & Math Sans Serif\\
-\cmd\mathcal\marg{text}  & Calligraphic\\
-\cmd\mathnormal\marg{text} & Math Normal\\
-\cmd\bm\marg{text}& Bold math for Greek letters\\
-                  & and other symbols\\
-\cmd\mathfrak\marg{text}\footnotemark[1]  & Fraktur\\
-\cmd\mathbb\marg{text}\footnotemark[1] & Blackboard Bold\\
-\end{tabular}
-\end{ruledtabular}
-\footnotetext[1]{Requires \classname{amsfonts} or \classname{amssymb} class option}
-\end{table}
-
-\subsubsection{User-defined macros}
-\LaTeXe\ provides several macros that enable users to easily create new
-macros for use in their manuscripts:
-\begin{itemize}
-\footnotesize
-\item \cmd\newcommand\marg{\\command}\oarg{narg}\oarg{opt}\marg{def} 
-\item \cmd\newcommand\verb+*+\marg{\\command}\oarg{narg}\oarg{opt}\marg{def}
-\item \cmd\renewcommand\marg{\\command}\oarg{narg}\oarg{opt}\marg{def}
-\item \cmd\renewcommand\verb+*+\marg{\\command}\oarg{narg}\oarg{opt}\marg{def}
-\item \cmd\providecommand\marg{\\command}\oarg{narg}\oarg{opt}\marg{def}
-\item \cmd\providecommand\verb+*+\marg{\\command}\oarg{narg}\oarg{opt}\marg{def}
-\end{itemize}
-Here \meta{\\command} is the name of the macro being defined,
-\meta{narg} is the number of arguments the macro takes,
-\meta{opt} are optional default values for the arguments, and
-\meta{def} is the actually macro definiton. \cmd\newcommand\ creates a
-new macro, \cmd\renewcommand\ redefines a previously defined macro,
-and \cmd\providecommand\ will define a macro only if it hasn't
-been defined previously. The *-ed versions are an optimization that
-indicates that the macro arguments will always be ``short'' arguments. This is
-almost always the case, so the *-ed versions should be used whenever
-possible.
-
-The use of these macros is preferred over using plain \TeX's low-level
-macros such as
-\cmd\def{},\cmd\edef{}, and \cmd\gdef{}. APS authors must follow the
-\textit{APS Author Guide for \revtex~4.2} when defining macros.
-
-\subsubsection{Symbols}
-
-\LaTeXe\ has added some convenient commands for some special symbols
-and effects. These are summarized in Table~\ref{tab:special}. See
-\cite{Guide} for details.
-
-\begin{table}
-\caption{\label{tab:special}\LaTeXe\ commands for special symbols and effects}
-\begin{ruledtabular}
-\begin{tabular}{lc}
-Command & Symbol/Effect\\
-\cmd\textemdash & \textemdash\\
-\cmd\textendash & \textendash\\
-\cmd\textexclamdown & \textexclamdown\\
-\cmd\textquestiondown & \textquestiondown\\
-\cmd\textquotedblleft & \textquotedblleft\\
-\cmd\textquotedblright & \textquotedblright\\
-\cmd\textquoteleft & \textquoteleft\\
-\cmd\textquoteright & \textquoteright\\
-\cmd\textbullet   & \textbullet\\
-\cmd\textperiodcentered & \textperiodcentered\\
-\cmd\textvisiblespace & \textvisiblespace\\
-\cmd\textcompworkmark & Break a ligature\\
-\cmd\textcircled\marg{char} & Circle a character\\
-\end{tabular}
-\end{ruledtabular}
-\end{table}
-
-\LaTeXe\ provides additional symbols in a
-separate package called \classname{latexsym}. To use these symbols, include
-the package using:
-\begin{verbatim}
-\usepackage{latexsym}
-\end{verbatim}
-
-\subsection{Using \LaTeXe\ packages with \revtex}\label{sec:usepackage}%
-
-Many \LaTeXe\ packages are available, for instance, on CTAN at
-\url{http://www.ctan.org/tex-archive/macros/latex/required/}
-and at
-\url{http://www.ctan.org/tex-archive/macros/latex/contrib/}. Full \TeX\ distributions
-such as  \TeX\
-Live  \url{http://www.tug.org/texlive/} provide an excellent and complete installation of \TeX\ that is
-easy to maintain.  Some of these packages
-are automatically loaded by \revtex~4.2 when certain class options are
-invoked and are, thus, ``required.''  They will either be distributed
-with \revtex\ or are already included with a standard \LaTeXe\
-distribution.
-
-Required packages are automatically loaded by \revtex\ on an as-needed
-basis.  Other packages should be loaded using the
-\cmd\usepackage\ command. To load the
-\classname{hyperref} package, the document preamble might look like:
-\begin{verbatim}
-\documentclass{revtex4-2}
-\usepackage{hyperref}
-\end{verbatim}
-
-Some common (and very useful) \LaTeXe\ packages are \textit{a priori}
-important enough that \revtex~4.2 has been designed to be specifically
-compatible with them. 
-A bug stemming from the use of one of these packages in
-conjunction with any of the APS journals may be reported by contacting
-\revtex\ support.
-\begin{description}
-\item[\textbf{AMS packages}] \revtex~4.2 is compatible with and depends
- upon the AMS packages
-\classname{amsfonts},
-\classname{amssymb}, and
-\classname{amsmath}. In fact, \revtex~4.2 requires use of these packages
-to accomplish some common tasks. See Section~\ref{sec:math} for more.
-\revtex~4.2 requires version 2.0 or higher of the AMS-\LaTeX\ package.
-
-\item[\textbf{array and dcolumn}]
-The \classname{array} and \classname{dcolumn} packages are part of
-\LaTeX's required suite of packages. \classname{dcolumn} is required
-to align table columns on decimal points (and it in turn depends upon
-the \classname{array} package).
-
-\item[\textbf{longtable}]
-\file{longtable.sty} may be used for large tables that will span more than one
-page. \revtex~4.2 dynamically applies patches to longtable.sty so that
-it will work in two-column mode.
-
-\item[\textbf{hyperref}] \file{hyperref.sty} is a package that is
-used for putting hypertext links into \LaTeXe\ documents.
-\revtex~4.2 has hooks to allow e-mail addresses and URL's to become
-hyperlinks if \classname{hyperref} is loaded.
-
-\item[\textbf{booktabs}] \revtex~4.2 improves compatibility with \classname{booktabs.sty}.
-
-\end{description}
-
-Other packages will conflict with \revtex~4.2 and should be
-avoided. Usually such a conflict arises because the package adds
-enhancements that \revtex~4.2 already includes. Here are some common
-packages that clash with \revtex~4.2:
-\begin{description}
-\item[\textbf{multicol}] \file{multicol.sty} is a package by Frank Mittelbach
-that adds support for multiple columns. In fact, early versions of
-\revtex~4.2 used \file{multicol.sty} for precisely this. \revtex\  
-incorporates its own support for multiple-column typesetting.
-
-\item[\textbf{cite}] Donald Arseneau's \file{cite.sty} is often used to provide
-support for sorting a \cmd\cite\ command's arguments into numerical
-order and to collapse consecutive runs of reference numbers. \revtex~4.2
-has this functionality built-in already via the \classname{natbib} package.
-
-\item[\textbf{mcite}] \revtex~4.2 already contains a lot of this
-functionality through its updated syntax for the \cmd\cite\ command and
-the latest  \classname{natbib} package.
-
-\item[\textbf{endfloat}] The same functionality can be accomplished
-using the \classoption{endfloats} class option.
-
-\item[\textbf{float}] \texttt{float.sty} provides a mechanism for creating new float classes with just a few commands. \revtex~4.2 has limited compatible with float.sty. If attempting to use this package, be sure to put any \cmd\newfloat\ commands after the \verb+\begin{document}+ line.
-
-\end{description}
-
-\section{The Document Preamble}
-
-The preamble of a \LaTeX\ document is the set of commands that precede
-the \envb{document} line. It contains a
-\cmd\documentclass\ line to load the \revtex~4.2 class (\textit{i.e.},
-all of the \revtex~4.2 macro definitions), \cmd\usepackage\ macros to
-load other macro packages, and other macro definitions.
-
-\subsection{The \emph{documentclass} line}
-The basic formatting of the manuscript is controlled by setting
-\emph{class options} using
-\cmd\documentclass\oarg{options}\aarg{\classname{revtex4-2}}.
-The optional arguments that appear in the square brackets control the layout of the
-document. At this point, one only needs to choose:
-\begin{itemize}
-\item Either the \classoption{aps} (default) or \classoption{aip} society option
-\item One of the chosen society's journal styles such as \classoption{prl} or \classoption{apl}
-\item A layout option such as \classoption{preprint} (single-column formatting), \classoption{reprint} (an approximation
-to the selected journal's actual layout which may be one- or two-column depending on the journal), or \classoption{twocolumn}
-\end{itemize}
-Usually, one would want to use \classoption{preprint} for draft papers. Paper size options are also
-available as well. In particular, \classoption{a4paper} is available
-as well as the rest of the standard \LaTeX\ paper sizes. A
-full list of class options is given in the \textit{\revtex~4.2 Command
-and Options Summary}.
-
-\subsection{Loading other packages}
-Other packages may be loaded into a \revtex~4.2 document by using the
-standard \LaTeXe\ \cmd\usepackage\ command. For instance, to load
-the \classoption{graphics} package, one would use
-\verb+\usepackage{graphics}+.
-
-\section{The Front Matter}\label{sec:front}
-
-After choosing the basic look and feel of the document by selecting
-the appropriate class options and loading in whatever other macros are
-needed, one is ready to move on to creating a new manuscript. After
-the preamble, be sure to put in a \envb{document} line (and put
-in an \enve{document} as well). This section describes the macros
-\revtex~4.2 provides for formatting the front matter of the
-article. The behavior and usage of these macros can be quite
-different from those provided in the \LaTeXe\ \classname{article} class.
-\subsection{Setting the title}
-
-The title of the manuscript is simply specified by using the
-\cmd\title\aarg{title} macro. A \verb+\\+ may be used to put a line
-break in a long title.
-
-\subsection{Specifying a date}%
-
-The \cmd\date\marg{date} command outputs the date on the
-manuscript.  Using \cmd\today\ will cause \LaTeX{} to insert the
-current date whenever the file is run:
-\begin{verbatim}
-\date{\today}
-\end{verbatim}
-
-\subsection{Specifying authors and affiliations}
-
-The \revtex~4.2 macros  for specifying authors and their affiliations are designed
- to save labor for authors and during production. Authors and affiliations are
-arranged into groupings called, appropriately enough, \emph{author
-groups}. Each author group is a set of authors who share the same set
-of affiliations. Author names are specified with the \cmd\author\
-macro while affiliations (or addresses) are specified with the
-\cmd\affiliation\ macro. Author groups are specified by sequences of
-\cmd\author\ macros followed by \cmd\affiliation\ macros. An
-\cmd\affiliation\ macro applies to all previously specified
-\cmd\author\ macros which don't already have an affiliation supplied.
-
-For example, if Bugs Bunny and Roger Rabbit are both at Looney Tune
-Studios, while Mickey Mouse is at Disney World, the markup would be:
-\begin{verbatim}
-\author{Bugs Bunny}
-\author{Roger Rabbit}
-\affiliation{Looney Tune Studios}
-\author{Mickey Mouse}
-\affiliation{Disney World}
-\end{verbatim}
-The default is to display this as 
-\begin{center}
-Bugs Bunny and Roger Rabbit\\
-\emph{Looney Tune Studios}\\
-Mickey Mouse\\
-\emph{Disney World}\\
-\end{center}
-This layout style for displaying authors and their affiliations is
-chosen by selecting the class option
-\classoption{groupedaddress}. Journal styles usually default this option,
- so it need not be specified explicitly. The other major way of displaying this
-information is to use superscripts on the authors and
-affiliations. This can be accomplished by selecting the class option
-\classoption{superscriptaddress}. To achieve the display
-\begin{center}
-Bugs Bunny,$^{1}$ Roger Rabbit,$^{1,2}$ and Mickey Mouse$^{2}$\\
-\emph{$^{1}$Looney Tune Studios}\\
-\emph{$^{2}$Disney World}\\
-\end{center}
-one would use the markup
-\begin{verbatim}
-\author{Bugs Bunny}
-\affiliation{Looney Tune Studios}
-\author{Roger Rabbit}
-\affiliation{Looney Tune Studios}
-\affiliation{Disney World}
-\author{Mickey Mouse}
-\affiliation{Disney World}
-\end{verbatim}
-
-Note that \revtex~4.2 takes care of any commas and \emph{and}'s that join
-the author names together and font selection, as well as any
-superscript numbering. Only the author names and affiliations should
-be given within their respective macros. See below for further information
-regarding the proper way to add footnotes to author names and affiliations.
-
-There is a third class option, \classoption{unsortedaddress}, for
-controlling author/affiliation display. The default
-\classoption{groupedaddress} will actually sort authors into the
-approriate author groups if one chooses to specify an affiliation for
-each author. The markup:
-\begin{verbatim}
-\author{Bugs Bunny}
-\affiliation{Looney Tune Studios}
-\author{Mickey Mouse}
-\affiliation{Disney World}
-\author{Roger Rabbit}
-\affiliation{Looney Tune Studios}
-\end{verbatim}
-will result in the same display as for the first case given
-above even though Roger Rabbit is specified after Mickey Mouse. To
-avoid Roger Rabbit being moved into the same author group as Bugs
-Bunny, use the
-\classoption{unsortedaddress} option instead. In general, it is safest
-to list authors in the order they should appear and specify
-affiliations for multiple authors rather than one at a time. This will
-afford the most independence for choosing the display option. Finally,
-it should be mentioned that the affiliations for the
-\classoption{superscriptaddress} are presented and numbered 
-in the order that they are encountered. These means that the order
-will usually follow the order of the authors. An alternative ordering
-can be forced by including a list of \cmd\affiliation\ commands before
-the first \cmd{\author} in the desired order. Then use the exact same
-text for each affilation when specifying them for each author.
-
-If an author doesn't have an affiliation, the \cmd\noaffiliation\
-macro may be used in the place of an \cmd\affiliation\ macro.
-
-
-\subsubsection{Collaborations}
-
-A collaboration name can be specified with the \cmd\collaboration\
-command. This is very similar to the \cmd\author\ command. In \revtex~4.2, it can
-be used with both the \classoption{superscriptaddress} and \classoption{groupedaddress} class options. The
-\cmd\collaboration\ command should appear at the end of the list of
-authors. The collaboration name will be appear centered in parentheses
-between the list of authors and the list of
-affiliations. Because collaborations
-don't normally have affiliations, one needs to follow the
-\cmd\collaboration\ with \cmd\noaffiliation.
-
-\subsubsection{Footnotes for authors, collaborations, affiliations or title}\label{sec:footau}
-
-Often one wants to specify additional information associated with an
-author, collaboration, or affiliation such as an e-mail address, an
-alternate affiliation, or some other ancillary information. 
-\revtex~4.2 introduces several new macros just for this purpose. They
-are:
-\begin{itemize}
-\item\cmd\email\oarg{optional text}\aarg{e-mail address}
-\item\cmd\homepage\oarg{optional text}\aarg{URL}
-\item\cmd\altaffiliation\oarg{optional text}\aarg{affiliation}
-\item\cmd\thanks\aarg{miscellaneous text}
-\end{itemize}
-In the first three, the \emph{optional text} will be prepended before the
-actual information specified in the required argument. In the APS journal style files, \cmd\email\ and \cmd\homepage\ no longer have a default value. However, in the AIP styles, each have a default text for their optional arguments
-(`Electronic address:' and `URL:' respectively). The \cmd\thanks\
-macro should only be used if one of the other three do not apply. Any
-author name can have multiple occurences of these four macros. Note
-that unlike the
-\cmd\affiliation\ macro, these macros only apply to the \cmd\author\
-that directly precedes it. Any \cmd\affiliation\ \emph{must} follow
-the other author-specific macros. A typical usage might be as follows:
-\begin{verbatim}
-\author{Bugs Bunny}
-\email[E-mail me at: ]{bugs@looney.com}
-\homepage[Visit: ]{http://looney.com/}
-\altaffiliation[Permanent address: ]
-                     {Warner Brothers}
-\affiliation{Looney Tunes}
-\end{verbatim}
-This would result in the footnote ``E-mail me at: \texttt{bugs@looney.com},
-Visit: \texttt{http://looney.com/}, Permanent address: Warner
-Brothers'' being attached to Bugs Bunny. Note that:
-\begin{itemize}
-\item Only an e-mail address, URL, or affiliation should go in the
-required argument in the curly braces.
-\item The font is automatically taken care of.
-\item An explicit space is needed at the end of the optional text if one is
-desired in the output.
-\item Use the optional arguments to provide customized
-text only if there is a good reason to.
-\end{itemize}
-
-The \cmd\collaboration\ , \cmd\affiliation\ , or even \cmd\title\ can
-also have footnotes attached via these commands. If any ancillary data
-(\cmd\thanks, \cmd\email, \cmd\homepage, or
-\cmd\altaffiliation) are given in the wrong context (e.g., before any
-\cmd\title, \cmd\author, \cmd\collaboration, or \cmd\affiliation\
-command has been given), then a warning is given in the \TeX\ log, and
-the command is ignored.
-
-Duplicate sets of ancillary data are merged, giving rise to a single
-shared footnote. However, this only applies if the ancillary data are
-identical: even the order of the commands specifying the data must be
-identical. Thus, for example, two authors can share a single footnote
-indicating a group e-mail address.
-
-Duplicate \cmd\affiliation\ commands may be given in the course of the
-front matter, without the danger of producing extraneous affiliations
-on the title page. However, ancillary data should be specified for
-only the first instance of any particular institution's
-\cmd\affiliation\ command; a later instance with different ancillary
-data will result in a warning in the \TeX\ log.
-
-It is preferable to arrange authors into
-sets. Within each set all the authors share the same group of
-affiliations. For each author, give the \cmd\author\ (and appropriate
-ancillary data), then follow this author group with the needed group
-of \cmd\affiliation\ commands.
-
-If affiliations have been listed before the first
-\cmd\author\ macro to ensure a particular ordering, be sure
-that any later \cmd\affiliation\ command for the given institution is
-an exact copy of the first, and also ensure that no ancillary data is
-given in these later instances.
-
-
-Each journal class option has a default behavior for the placement of these
-ancillary information footnotes. For instance, the \classoption{prb} option puts all
-such footnotes at the start of the bibliography while the \classoption{prl}
-journal styles displays them on the first page. One can override a
-journal style's default behavior by specifying explicitly the class
-option
-\classoption{bibnotes} (puts the footnotes at the start of the
-bibliography) or \classoption{nobibnotes} (puts them on the first page).
-Please consult the documentation for the various journal style files for further information.
-
-\subsubsection{Specifying first names and surnames}
-
-Many authors have names in which either the surname appears first
-or in which the surname is made up of more than one name. To ensure
-that such names are accurately captured for indexing and other
-purposes, the \cmd\surname\ macro should be used to indicate which portion
-of a name is the surname. Similarly, there is a \cmd\firstname\ macro
-as well, although usage of \cmd\surname\ should be sufficient. If an
-author's surname is a single name and written last, it is not
-necessary to use these macros. These macros do nothing but indicate
-how a name should be indexed. Here are some examples:
-\begin{verbatim}
-\author{Andrew \surname{Lloyd Weber}}
-\author{\surname{Mao} Tse-Tung}
-\end{verbatim}
-
-\subsection{The abstract}
-An abstract for a paper is specified by using the \env{abstract}
-environment:
-\begin{verbatim}
-\begin{abstract}
-Text of abstract
-\end{abstract}
-\end{verbatim}
-Note that in \revtex~4.2 the abstract must be specified before the
-\cmd\maketitle\ command and there is no need to embed it in an explicit
-minipage environment.
-
-\subsubsection{Structured abstracts}
-A new feature in \revtex~4.2 is support for \textit{structured abstracts}. A ``structured" abstract is an abstract divided into labeled sections. For instance, \textit{Physical Review C} would like authors to provide abstracts with sections summarizing the paper's  \textbf{Background}, \textbf{Purpose}, \textbf{Method}, \textbf{Results}, and \textbf{Conclusions}. This can be accomplished by using the \texttt{description} environment within the \texttt{abstract} environment.  For example:
-\begin{verbatim}
-\begin{abstract}
-\begin{description}
-\item[Background] This part would describe the
-context needed to understand what the paper
-is about.
-\item[Purpose] This part would state the purpose
-of the present paper.
-\item[Method] This part describe the methods
-used in the paper.
-\item[Results] This part would summarize the
-results.
-\item[Conclusions] This part would state the
-conclusions of the paper.
-\end{description}
-\end{abstract}
-\end{verbatim}
-
-\subsection{PACS codes}
-PACS codes are obsolete. The \classoption{showpacs} option does nothing, but is present so that older documents may still be processed under \revtex~4.2.
-
-\subsection{Keywords}
-A \cmd\keywords\ macro may also be used to indicate keywords for the
-article. 
-\begin{verbatim}
-\keywords{nuclear form; yrast level}
-\end{verbatim}
-This will be displayed below the abstract and PACS (if supplied). Like
-PACS codes, the actual display of the the keywords is controlled by
-two classoptions: \classoption{showkeys} and
-\classoption{noshowkeys}. An explicit \classoption{showkeys} must be
-included in the \cmd\documentclass\ line to display the keywords.
-
-\subsection{Institutional report numbers}
-Institutional report numbers can be specified using the \cmd\preprint\
-macro. If the \classoption{preprintnumbers} class option is specified, these will be displayed in the upper right corner of the first page. Multiple \cmd\preprint\ macros maybe supplied (space is
-limited though, so only three or less may actually fit). Please note that the \classoption{preprint} class option does not automatically invoke \classoption{preprintnumbers}.
-
-\subsection{maketitle}
-After specifying the title, authors, affiliations, abstract, PACS
-codes, and report numbers, the final step for formatting the front
-matter of the manuscript is to execute the \cmd\maketitle\ macro by
-simply including it:
-\begin{verbatim}
-\maketitle
-\end{verbatim}
-The \cmd\maketitle\ macro must follow all of the macros listed
-above. The macro will format the front matter in accordance with the various
-class options that were specified in the
-\cmd\documentclass\ line (either implicitly through defaults or
-explicitly).
-
-\section{The body of the paper}
-
-For typesetting the body of a paper, \revtex~4.2 relies heavily on
-standard \LaTeXe\ and other packages (particulary those that are part
-of AMS-\LaTeX). Users unfamiliar with these packages should read the
-following sections carefully. 
-
-\subsection{Section headings}
-
-Section headings are input as in \LaTeX.
-The output is similar, with a few extra features.
-
-Four levels of headings are available in \revtex{}:
-\begin{quote}
-\cmd\section\marg{title text}\\
-\cmd\subsection\marg{title text}\\
-\cmd\subsubsection\marg{title text}\\
-\cmd\paragraph\marg{title text}
-\end{quote}
-
-Use the starred form of the command to suppress the automatic numbering; e.g.,
-\begin{verbatim}
-\section*{Introduction}
-\end{verbatim}
-
-To label a section heading for cross referencing, best practice is to
-place the \cmd\label\marg{key} within the argument specifying the heading:
-\begin{verbatim}
-\section{\label{sec:intro}Introduction}
-\end{verbatim}
-
-In some journal substyles, such as those of the APS,
-all text in the \cmd\section\ command is automatically set uppercase.
-If a lowercase letter is needed, use \cmd\lowercase\aarg{x}.
-For example, to use ``He'' for helium in a \cmd\section\marg{title text} command, type
-\verb+H+\cmd\lowercase\aarg{e} in \marg{title text}.
-
-Use \cmd\protect\verb+\\+ to force a line break in a section heading.
-(Fragile commands must be protected in section headings, captions, and
-footnotes and \verb+\\+ is a fragile command.)
-
-\subsection{Paragraphs and General Text}
-
-Paragraphs always end with a blank input line.  Because \TeX\
-automatically calculates linebreaks and word hyphenation in a
-paragraph, it is not necessary to force linebreaks or hyphenation.  Of
-course, compound words should still be explicitly hyphenated, e.g.,
-``author-prepared copy.''
-
-Use directional quotes for quotation marks around quoted text
-(\texttt{``xxx''}), not straight double quotes (\texttt{"xxx"}).
-For opening quotes, use one or two backquotes; for closing quotes,
-use one or two forward quotes (apostrophes).
-
-\subsection{One-column vs. two-column layouts}\label{sec:widetext}
-
-One of the hallmarks of \textit{Physical Review} and many of the AIP journals is their two-column
-formatting. \revtex~4.2 provides the \classoption{reprint} class option that provides for each
-journal class option a close approximation to the journal's actual production formatting. Note that
-the \classoption{reprint} option will give either one or two-column formatting as appropriate for the particular journal.
-For most APS and AIP journals, the \classoption{reprint} option will take care of formatting the front matter
-(including the abstract) as a single column and will typeset the body in two columns. \revtex~4.2 has its own
-built-in two-column formatting macros to provide well-balanced columns as well as reasonable control over the placement of floats in either
-one- or two-column modes. When drafting papers, it is common to use a one-column format. This is best achieved by using the
-\classoption{preprint} class option. Authors may override a particular journal's formatting by using the lower level options \classoption{onecolumn} and \classoption{twocolumn}, but best practice is to stick with the \classoption{preprint} and \classoption{reprint} options.
-
-Please note that the \classoption{reprint} class option is only an \textit{approximation} of a journal's final layout. Because of font differences, figure rescaling, and other factors, authors should not expect the \classoption{reprint} option to give fully accurate estimates of an article's ultimate length after being typeset for the journal.
-
-Occasionally it is necessary to change the formatting from two-column to
-one-column to better accommodate very long equations that are more
-easily read when typeset to the full width of the page. This is
-accomplished using the \env{widetext} environment:
-\begin{verbatim}
-\begin{widetext}
-long equation goes here
-\end{widetext}
-\end{verbatim}
-In two-column mode, this will temporarily return to one-column mode,
-balancing the text before the environment into two short columns, and
-returning to two-column mode after the environment has
-finished. \revtex~4.2 will also add horizontal rules to guide the
-reader's eye through what may otherwise be a confusing break in the
-flow of text. The
-\env{widetext} environment has no effect on the output under the 
-\classoption{preprint} class option because this already uses
-one-column formatting.
-
-Use of the \env{widetext} environment should be restricted to the bare
-minimum of text that needs to be typeset this way. However, short pieces
-of paragraph text and/or math between nearly contiguous wide equations
-should be incorporated into the surrounding wide sections.
-
-Low-level control over the column grid can be accomplished with the
-\cmd\onecolumngrid\ and \cmd\twocolumngrid\ commands. Using these, one
-can avoid the horizontal rules added by \env{widetext}. These commands
-should only be used if absolutely necessary. Wide figures and tables
-should be accommodated using the proper \verb+*+ environments.
-
-\subsection{Cross-referencing}\label{sec:xrefs}
-
-\revtex{} inherits the \LaTeXe\ features for labeling and cross-referencing
-section headings, equations, tables, and figures. This section
-contains a simplified explanation of these cross-referencing features.
-The proper usage in the context of section headings, equations,
-tables, and figures is discussed in the appropriate sections.
-
-Cross-referencing depends upon the use of ``tags,'' which are defined by
-the user.  The \cmd\label\marg{key} command is used to identify tags for
-\revtex. Tags are strings of characters that serve to label section
-headings, equations, tables, and  figures that replace explicit,
-by-hand numbering.
-
-Files that use cross-referencing (and almost all manuscripts do)
-need to be processed through \revtex\ at least twice to
-ensure that the tags have been properly linked to appropriate numbers.
-If any tags are added in subsequent editing sessions, 
-\LaTeX{} will display a warning message in the log file that ends with
-\texttt{... Rerun to get cross-references right}.
-Running the file through \revtex\ again (possibly more than once) will
-resolve the cross-references.  If the error message persists, check
-the labels; the same \marg{key} may have been used to label more than one
-object.
-
-Another \LaTeX\ warning is \texttt{There were undefined references},
-which indicates the use of a key in a \cmd\ref\ without ever
-using it in a \cmd\label\ statement.
-
-\revtex{} performs autonumbering exactly as in standard \LaTeX.
-When the file is processed for the first time,
-\LaTeX\ creates an auxiliary file (with the \file{.aux} extension) that 
-records the value of each \meta{key}.  Each subsequent run retrieves
-the proper number from the auxiliary file and updates the auxiliary
-file.  At the end of each run, any change in the value of a \meta{key}
-produces a \LaTeX\ warning message.
-
-Note that with footnotes appearing in the bibliography, extra passes
-of \LaTeX\ may be needed to resolve all cross-references. For
-instance, putting a \cmd\cite\ inside a \cmd\footnote\ will require at
-least three passes.
-
-Using the \classname{hyperref} package to create hyperlinked PDF files
-will cause reference ranges to be expanded to list every
-reference in the range. This behavior can be avoided by using the
-\classname{hypernat} package available from \url{www.ctan.org}.
-
-\subsection{Acknowledgments}
-Use the \env{acknowledgments} environment for an acknowledgments
-section.  Depending on the journal substyle, this element may be
-formatted as an unnumbered section titled \textit{Acknowledgments} or
-simply as a paragraph. Please note the spelling of
-``acknowledgments.''
-\begin{verbatim}
-\begin{acknowledgments}
-The authors would like to thank...
-\end{acknowledgments}
-\end{verbatim}
-
-\subsection{Appendices}
-The \cmd\appendix\ command signals that all following sections are
-appendices, so \cmd\section\marg{title text} after \cmd\appendix\ will set
-\marg{title text} as an appendix heading (an empty \marg{title text}
-is permitted). For a single appendix, use a
-\cmd\appendix\verb+*+ followed by \cmd\section\marg{title text}
-command to suppress the appendix letter in the section heading.
-
-\subsection{\label{sec:lineno}Line numbering}
-\revtex~4.2 provides the \classoption{linenumbers} class option to enable line numbering. While it is
-possible to directly call in the \classname{lineno.sty}, using the class option ensures
-that the default parameters needed to properly typeset the line numbers are set up correctly. It is
-still possible for authors to override parameters such as \cmd\linenumbersep\ as usual, however.
-
-\section{Math and equations}\label{sec:math}
-
-\subsection{Math in text}
-
-Not surprisingly, \revtex\ uses the \TeX\ math \verb+$+ delimiters
-for math embedded in text. For example,
-\verb|$a^{z}$| gives $a^{z}$.  Within math mode, use
-\verb+^+\marg{math} for superscripts and
-\verb+_+\marg{math} for subscripts. If the braces after the
-\verb+^+ are omitted, \TeX{} will
-superscript the next \emph{token} (generally a single character or
-command). Thus it is safest to use explicit braces \verb+{}+.
-
-As with text, math should not require extensive explicit vertical or
-horzontal motion commands, because \TeX\ calculates math spacing
-itself automatically.  In particular, explicit spacing around
-relations (e.g., $=$) or operators (e.g., $+$) should be
-unnecessary. These suggestions notwithstanding, some fine-tuning of
-math is required in specific cases, see Chapter~18 in the \TeX
-book\cite{TeXbook}.
-
-\subsection{Text in math}\label{sec:textinmath}
-
-There are times when normal, non-italic text needs to be inserted
-into a math expression.  The \cmd\text\marg{text} command is the
-preferred method of accomplishing this.  It produces regular text
-\emph{and} scales correctly in superscripts:
-\verb+$y=x \text{ for } x_{\text{e-p}}$+ gives 
-``$y=x \text{ for } x_{\text{e-p}}$''. To use the \cmd\text\ command,
-the \classname{amsmath} package must be loaded: include a
-\cmd\usepackage\aarg{\classname{amsmath}} command in the document
-preamble or use the class option \classoption{amsmath}. Please note
-that \revtex~4.2 requires version 2.0 or higher of \classname{amsmath}.
-
-Other common alternatives may be less desirable. Using the standard
-\LaTeXe\  \cmd\mbox\marg{text} will give normal text, including a hyphen,
-but will not scale correctly in superscripts:
-\verb+$x_{\mbox{e-p}}$+ gives ``$x_{\mbox{e-p}}$''.
-The \cmd\rm\ command
-only switches to Roman font for math letters.  It does not, for
-example, handle hyphens correctly:
-\verb+$$x_{\rm{e-p}}$+ gives ``$x_{\rm e-p}$''. But note that with
-\cmd\textrm{}, it does work: \verb+$x_{\textrm{e-p}}$+ gives ``$x_{\textrm{e-p}}$''.
-
-\subsection{Displayed equations}\label{sec:dispmath}
-
-Equations are set centered in the column width or flush left depending
-on the selected journal substyle.
-
-For the simplest type of displayed equation, a numbered, one-line
-equation, use the \env{equation} environment.
-\revtex\ takes care of the equation number%
----the number will be set below the equation if necessary.
-Use \cmd\[\dots\cmd\] for a single, one-line unnumbered display equation.
-
-Use the \env{eqnarray} environment when more than one consecutive
-equation occurs, putting each equation in a separate row of the
-environment, and using \cmd\nonumber\ before the row end (\cmd\\) to
-suppress the equation number where necessary.  If the equations are
-related to each other, align each on the respective relation operator
-(such as $=$).
-
-When an equation is broken over lines or is continued over multiple
-relation operators, it is called a multi-line or continued equation,
-respectively; here, too, use the \env{eqnarray} environment.
-
-For a continued equation, align each row on the relation operator just
-as with multiple equations, and use the \cmd\nonumber\ command to
-suppress auto-numbering on broken lines.  Also, use the starred form
-of the row end (\cmd\\\verb+*+) to prevent a pagebreak at that
-juncture.
-
-Short displayed equations that can appear together on a single line
-separated by \cmd\qquad\ space may be placed in a single
-\env{equation} environment.
-
-As explained in Section~\ref{sec:widetext}, occasionally in two-column
-mode a long equation, in order to fit it in the narrow column width,
-would need to be broken into so many lines that it would affect
-readibility. Set it in a wide column using the \env{widetext}
-environment. Then return to the normal text width as soon as
-possible.
-
-The sample file \file{apssamp.tex} illustrates how to obtain each of
-the above effects.
-
-\subsection{Numbering displayed equations}
-
-\revtex~4.2 automatically numbers equations.
-For single-line and multi-line equations, use the
-\env{equation} and \env{eqnarray} environments as described above.
-For unnumbered single-line equations, use the \verb+\[+\dots\verb+\]+
-construction.  The command \cmd\nonumber\ will suppress the numbering
-on a single line of an
-\env{eqnarray}.
-For a multi-line equation with no equation numbers at all,
-use the \env{eqnarray*} environment.
-
-A series of equations can be a labeled with a lettered sequence,
-e.g., (3a), (3b), and (3c), by
-putting the respective \env{equation} or \env{eqnarray} environment within a
-\env{subequations} environment. 
-The \classname{amsmath} package (can be loaded with the
-\classoption{amsmath} class option) is required for this.
-
-Use the command \cmd\tag\marg{number} to produce an idiosyncratic
-equation number: $(1')$, for example.  Numbers assigned by \cmd\tag\
-are completely independent of \revtex's automatic numbering.  The
-package \classname{amsmath} is required for using the \cmd\tag\
-command. Please
-note that the use of the \texttt{tag} command may conflict with the use of the \classoption{hyperref} package
-due an incompatibility between \classoption{amsmath} and \classoption{hyperref}. 
-
-To have \revtex{} reset the equation numbers at the start of each section,
-use the \classoption{eqsecnum} class option in the document preamble. 
-
-See the sample file \file{apssamp.tex} for some examples.
-
-\subsection{Cross-referencing displayed equations}
-
-To refer to a numbered equation, use
-the \cmd\label\marg{key} and \cmd\ref\marg{key} commands.
-The \cmd\label\marg{key} command is used within the referenced equation
-(on the desired line of the \env{eqnarray}, if a multi-line equation):
-\begin{verbatim}
-\begin{equation}
- A=B \label{pauli}
-\end{equation}
- ... It follows from Eq.~(\ref{pauli})
-that this is the case ...
-\begin{eqnarray}
- A & = &B,\label{pauli2}\\
- A'& = &B'
-\end{eqnarray}
-\end{verbatim}
-gives 
-\begin{equation}
-A=B \label{pauli}
-\end{equation}
- ... It follows from Eq.~(\ref{pauli})
-that this is the case ...
-\begin{eqnarray}
-A & = &B,\label{pauli2}\\
-A'& = &B'
-\end{eqnarray}
-
-Please note the parentheses surrounding the \cmd\ref\ command.
-These are \emph{not} provided automatically and, thus, must be
-explicitly incorporated.
-
-Numbers produced with \cmd\tag\ can also be cross-referenced by adding
-a \cmd\label\ command after the \cmd\tag\ command.
-
-Using a \cmd\label\ after \envb{subequations} to reference the
-\emph{general} number of the equations in the
-\env{subequations} environment. For example, if
-\begin{verbatim}
-\begin{subequations}
- \label{allequations} % notice location
- \begin{eqnarray}
-  E&=&mc^2,\label{equationa}
- \\
-  E&=&mc^2,\label{equationb}
- \\
-  E&=&mc^2,\label{equationc}
- \end{eqnarray}
-\end{subequations}
-\end{verbatim}
-%
-gives the output
-\begin{subequations}
-\label{allequations} % notice location
-\begin{eqnarray}
-E&=&mc^2,\label{equationa}
-\\
-E&=&mc^2,\label{equationb}
-\\
-E&=&mc^2,\label{equationc}
-\end{eqnarray}
-\end{subequations}
-%
-then \verb+Eq.~(\ref{allequations})+ gives ``Eq.~(\ref{allequations})''.
-
-{\bf Note:} incorrect cross-referencing will result if
-\cmd\label\ is used in an unnumbered single-line equation
-(i.e., within the \verb+\[+ and \verb+\]+ commands),
-or if \cmd\label\ is used on a line of an eqnarray that is not being numbered
-(i.e., a line that has a \cmd\nonumber).
-
-\subsection{Using the AMS packages \classoption{amsfonts},
-\classoption{amssymb}, and \classoption{amsmath}}\label{AMS}
-
-The American Mathematical Society's AMS-\LaTeX\ packages provided extra
-fonts, symbols, and math markup that are quite convenient. \revtex~4.2
-supports the use of these packages directly. To use the \classoption{amsfonts},
-\classoption{amssymb}, and \classoption{amsmath} class options,
-AMS-\LaTeX\ (and perhaps the additional AMS fonts) will need to be
-installed. Please note that \revtex~4.2 requires version 2.0 or higher
-of AMS-\LaTeX. These packages can be downloaded from
-\url{http://www.ams.org/tex/}.
-
-There are two class options for accessing the AMS fonts:
-\classoption{amsfonts} and \classoption{amssymb}.
-The \classoption{amsfonts} option defines the \cmd\mathfrak\ and
-\cmd\mathbb\ commands to switch to the Fraktur and
-Blackboard Bold fonts, respectively.
-These fonts are selected with the \cmd\mathfrak\ and \cmd\mathbb\
-font-switching commands:
-\verb+${\mathfrak{G}}$+ gives a Fraktur ``$\mathfrak{G}$''
-and \verb+${\mathbb{Z}}$+ gives a Blackboard Bold ``$\mathbb{Z}$''.
-\revtex{} does not currently support the use of the extra Euler fonts
-(the AMS fonts starting with \texttt{eur} or \texttt{eus}) or the
-Cyrillic fonts (the AMS fonts starting with \texttt{w}).
-
-The \classoption{amssymb} class option gives all the font
-capabilities of the
-\classoption{amsfonts} class option and further defines the commands
-for many commonly used math symbols. These symbols will scale
-correctly in superscripts and other places. See the AMS-\LaTeX\
-documentation for the complete list of symbols available.
-
-\subsection{Bold symbols in math}\label{sec:bboxamsfonts}
-
-\revtex~4.2 uses the standard \LaTeXe\ Bold Math (\classname{bm}) package as the
-basis for creating bold symbols in math mode. As usual, this requires
-an explicit \cmd\usepackage\aarg{\classname{bm}} in the document
-preamble. The command
-\cmd\bm\marg{symbol} makes \marg{symbol} bold in math mode, ensuring
-that it is the correct size, even in superscripts. If the correct font
-in the correct size is not available then result is the \marg{symbol}
-set at the
-correct size in lightface and a \LaTeXe\ warning that says
-``\texttt{No boldmath typeface in this size}\dots''. Most bold special
-characters will require that the AMS fonts be installed and the
-\classoption{amsfonts} class option be invoked.
-
-\cmd\bm\ is the proper means to get bold Greek characters---upper- and
-lowercase---and other symbols.
-The following will come out bold with \cmd\bm:
-normal math italic letters, numbers,
-Greek letters (uppercase and lowercase),
-small bracketing and operators, and \cmd\mathcal. Fraktur
-characters will come out bold in a \cmd\bm; however, Blackboard Bold
-requires using the \cmd\mathbb\ command rather than \cmd{\bm}.
-The \classoption{amsfonts} option adds support for bold math
-letters and symbols in smaller sizes and in superscripts when a
-\cmd\bm\marg{symbol} is used. 
-For example, \verb+$\pi^{\bm{\pi}}$+ gives a bold
-lowercase pi in the superscript position: $^{\pi\bm{\pi}}$.
-
-Note that \cmd\bm\marg{math} is a fragile command and, thus, should be
-preceded by \cmd\protect\ in commands with moving arguments.
-
-\section{Footnotes}
-\LaTeX's standard \cmd\footnote\ command is available in
-\revtex~4.2. The footnote text can either appear at the bottom of a page or
-as part of the bibliography. This choice can be controlled by two class options:
-\classoption{footinbib} and \classoption{nofootinbib}. \revtex~4.2
-defaults to the former.  Specific journal options may select a
-different value than the default.
-
-Please note that even if  Bib\TeX\ is not being used for the references, you
-may have to run Bib\TeX\ if you are using footnotes without the \classoption{nofootinbib} option.
-The log file will contain errors about missing references such as \texttt{Note1} in this case and a file ending in
-\texttt{Notes.bib} will have been produced during the processing of the \TeX\ file.
-
-Note that in the latter case, the
-argument of the
-\cmd\footnote\ command is a moving argument in the sense of the \LUG,
-Appendix~C.1.3: any fragile command within that argument must be
-preceded by a \cmd\protect\ command.
-
-The \cmd\footnote\ macro \emph{should not} be used in the front
-matter for indicating author/affiliation relationships or to provide
-additional information about authors (such as an e-mail
-address). See Section~\ref{sec:footau} for the proper way to do
-this.
-
-Finally, footnotes that appear in tables behave differently. They
-will be typeset as part of the table itself. See
-Section~\ref{sec:tablenote} for details.
-
-\section{Citations and References}\label{sec:endnotes}
-
-\revtex~4.2 adds significant new functionality to \revtex~4's 
-typesetting of citations and references. The new functionality is
-designed to make it easier to use Bib\TeX\ and produce the desired output 
-in the reference section without having to edit Bib\TeX's output. The new features include:
-\begin{itemize}
-\item Endnotes created with the \cmd\footnote\ command are automatically interleaved with the bibliographic references. \revtex~4 would typeset all endnotes at the end of the bibliography.
-\item Combining multiple references automatically into a single entry in the bibliography. \revtex~4 required by-hand editing of Bib\TeX\ output. This is achieved by prepending an asterisk (*) to the reference's \textit{key} in the \cmd\cite\ command. \verb+\cite{{key1,*key2}+ would make a single entry in the bibliography by combining into one \cmd\bibitem\ the entries from the \texttt{.bib} file with keys \textit{key1} and \textit{key2}. See Section~\ref{sec:multiple} for more details.
-\item Text can be prepended or appended to an entry in the bibliography. \revtex~4 required by-hand editing of the Bib\TeX\ output. See Section~\ref{sec:prepend} for an example of how to do this.
-\end{itemize}
-
-Proper formatting of references requires Patrick Daly's \classname{natbib} citation package. \BibTeX\ style files
-for APS and AIP journals are created using his \classname{custom-bib} tool kit. From an author's point of view, all this means is that a proper
-\revtex~4.2 installation requires having \classname{natbib} (version 8.31a
-or higher) installed. It also means that the full set of
-\classname{natbib} functionality is available from within \revtex~4.2
-(but see the \textit{APS Author Guide for \revtex~4.2} and \textit{Author's Guide to AIP Substyles for \revtex~4.2} for restrictions if
-submitting to an APS or AIP journal). The \classname{natbib} documentation contains many examples; see in
-particular the \verb+natnotes.tex+ file for a convenient summary. Please also note that \classname{natbib 8.3} and later now gives an error (rather than merely a warning as in earlier versions) if you try to use a Bib\TeX\ file that isn't compatible with author-year style citations with a journal style that requires author-year citations (such as \textit{Reviews of Modern Physics}).
-
-\subsection{Citing a reference}
-As in standard \LaTeX, references are cited in text using the
-\cmd\cite\marg{key} command and are listed in the bibliography using
-the \cmd\bibitem\marg{key} command. The \cmd\cite{} macro enables
-\revtex~4.2 to automatically number the references in the manuscript.
-
-A typical example might be:
-\begin{verbatim}
-String theory\cite{GSW} attempts to 
-provide a theory of everything.
-\end{verbatim}
-The corresponding \cmd\bibitem{} would be:
-\begin{verbatim}
-\bibitem{GSW} M.~Greene, J.~Schwarz, and
-E.~Witten, \textit{Superstring Theory:
-Introduction}, (Cambridge University
-Press, London, 1985).
-\end{verbatim}
-
-Journals differ in how the \cmd\cite\ will be displayed.  Most APS journals
-display the citation in-line, as a number, enclosed in square brackets,
-\textit{e.g.}, ``String theory[1] attempts\dots.'' Other journals
-may instead use a number in a superscript: ``String theory$^{1}$ attempts\dots.''
-Selecting the journal substyle using a class option will invoke the appropriate style.
-In journal substyles using superscripts,
-the macro the \cmd\onlinecite\marg{key} is necessary to get the number
-to appear on the baseline.
-For example, ``String theory (see, for example,
-\verb+Ref.~\onlinecite{GSW}+)'' will give the output
-``String theory (see, for example, Ref.~1).''
-
-The \cmd{\onlinecite} command has the same semantics as
-\classname{natbib}'s \cmd{\citealp} command.
-
-A \cmd\cite\ command with multiple keys is formatted with consecutive
-reference numbers collapsed; e.g., [1,2,3,5] will be output as
-[1--3,5].  To split the list over more than one line, use
-a \verb+%+ character immediately following a comma:
-\begin{verbatim}
-. . .  \cite{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}
-\end{verbatim}
-The \verb+%+ avoids unwanted spaces.
-
-\subsection{Author/Year (Non-numeric) Citations}
-
-\textit{Reviews of Modern Physics} uses a citation style based on the
-first author's last name and the year of the reference rather than a
-simple number. Support for this style of citing references is the
-primary reason \revtex~4.2 uses the \classname{natbib}
-package. \classname{natbib} uses an optional argument to the
-\cmd\bibitem\ macro to specify what text to use for the \cmd\cite\
-text:
-\begin{quote}
-\cmd\bibitem\verb+[+\meta{short-name}\verb+(+\meta{year}\verb+)+\meta{long-name}\verb+]+
-\end{quote}
-where \meta{short-name} is the author name used in a parenthetical citation, 
-\meta{long-name} that used in a textual citation, and 
-\meta{year} is the year. More concretely, the \cmd\bibitem\ example
-above would appear as
-\begin{verbatim}
-\bibitem[Greene et al.(1985)Green,
-Schwarz, and Witten]{GSW}
-M.~Greene, J.~Schwarz, and E.~Witten,
-\textit{Superstring Theory},
-(Cambridge Press, London, 1985).
-\end{verbatim}
-
-When the citation constitutes part of the grammar of the sentence,
-the \cmd\textcite\marg{key} command may be used (analogous to the
-\cmd\onlinecite\ command above). Both \cmd\textcite\ and
-\cmd\onlinecite\ are built upon \classname{natbib}'s rich repertoire of
-macros (\cmd\citep{}, \cmd\citet{}, etc.). These macros are available in
-\revtex~4.2; however, APS authors must follow the
-\textit{APS Author Guide for \revtex~4.2}
-guidelines regarding \classname{natbib}'s macros.
-
-\subsection{Combined Author/Year and Numeric Citations}
-
-AIP's \textit{Journal of Mathematical Physics} uses a combined author/year and numerical citation style. \revtex~4.2 supports this referencing style. Please see the \textit{Author's Guide to AIP Substyles for \revtex~4.2} for more information about this style.
-
-\subsection{\label{sec:use-bib}Using Bib\TeX}
-
-The \cmd\bibitem{} entries can be coded by hand as above, of course, but the
-use of \BibTeX\ with the new style files provided with \revtex~4.2 makes
-it particularly simple to generate marked-up references that can, for
-instance, take advantage of packages like
-\classname{hyperref} for linking. They also save the trouble of having
-to specify formatting like the italics for the book title in the above
-example. And, for those wishing to use author/year citations, \BibTeX\ 
-will automatically generate the appropriate optional arguments for the
-\cmd\bibitem\ commands.
-
-\BibTeX\ is an adjunct to \LaTeX\ that aids in the
-preparation of  bibliographies. \BibTeX\ allows authors to build up a
-database or collection of bibliography entries that may be used for many
-manuscripts. A \BibTeX\ style file then specifies how to transform the
-entries into a proper \cmd\bibitem{} for a particular journal. Here we
-give a brief summary of how to get started with \BibTeX. More details can be
-found in the LaTeX books listed in the references.
-
-Selecting a journal style by using an appropriate class option will
-automatically select the correct \BibTeX\ style file from those included in
-\revtex~4.2. Five basic \BibTeX\ style files are included: \file{apsrev4-2.bst} (APS journals using a numeric citation style, \textit{i.e.}, all but RMP), \file{apsrmp4-2.bst} (author/year style citations for RMP),
-\file{aipauth4-2.bst} (AIP journal using an author/year citation style),  \file{aipnum4-2.bst} (AIP journals using a numeric citation style) and \file{aapmrev4-2.bst} for AAPM journals. The selection can be overridden by specifying an
-alternative \file{.bst} file using the standard \LaTeXe
-\cmd\bibliographystyle\ macro. This must appear in the preamble
-before the \envb{document} line in \revtex~4.2 (this differs from
-standard \LaTeX).
-
-The \BibTeX\ database files will contain entries such as:
-\begin{verbatim}
-@Book{GSW,
-  author=``M. Greene, J. Schwarz,
-           E. Witten'',
-  title=``Superstring theory:
-          Introduction'',
-  publisher=``Cambridge University
-          Press'',
-  address=``London'',
-  year=``1985''
-}
-\end{verbatim}
-There are entry formats for articles, technical reports, e-prints,
-theses, books, proceedings, and articles that appear in books or
-proceedings. The styles provided with
-\revtex~4.2 also allows URL's and e-print identifiers to be specified
-for any of the different entry types. There is also an additional
-``collaboration'' field that can be used in addition to ``author'.'
-
-To actually create the bibliography in the manuscript, the
-\cmd\bibliography\marg{bib files} macro is used. 
-Here \meta{bib files} is a comma-separated list of \BibTeX\ bibliography
-database files, each with the \file{.bib} extension. The
-\cmd\bibliography\ macro should be placed at the location where the
-references are to appear (usually after the main body of the
-paper). When the manuscript is processed with \LaTeX\ for the first
-time, the keys corresponding for the \cmd\cite{} macros used in the
-manuscript are written out to the \file{.aux} file. Then \BibTeX\ should
-be run (if the manuscript is called \file{paper.tex}, the command would
-be \verb+bibtex paper+. This will produce a \file{.bbl} file containing all
-of the \cmd\bibitem{}'s for the manuscript. Subsequent runs of \LaTeXe\
-will call this file in to resolve the references. \LaTeXe\ should be run
-repeatedly until all references are resolved.
-
-The \BibTeX-produced \cmd\bibitem{}'s created using the \revtex\ style files appear considerably more complex than the example given
-above. This is because the style files add in \cmd\bibinfo{},
-\cmd\bibnamefont{}, \cmd\eprint{}, and \cmd\url{} macros for
-specifying additional formatting and tagging. The \cmd\bibinfo\ macro
-is mostly a do-nothing macro that serves merely to tag the information with
-the field information from the original entry in the \BibTeX\ database.
-The \cmd\eprint\ and \cmd\url\ macros can be used to create the
-appropriate hyperlinks in target formats such as PDF.
-
-For more information on using \BibTeX\ with \LaTeX, see Sections~4.3.1
-and~C.11.3 of the \LUG\cite{LaTeXman}, Section~13.2 of \cite{Compan},
-or the online \BibTeX\ manual \file{btxdoc.tex} from 
-\url{http://www.ctan.org/tex-archive/biblio/bibtex/distribs/doc/}.
-
-\subsubsection{\texttt{arXiv.org} support}
-
-\revtex~4.2 supports citing e-prints from \texttt{arXiv.org} For instance, the \texttt{.bib} entry
-\begin{verbatim}
-@Unpublished{Ginsparg:1988ui,
-  author    = "Ginsparg, Paul H.",
-  title     = "{Applied Conformal Field Theory}",
-  year      = "1988",
-  eprint    = "hep-th/9108028",
-  archivePrefix = "arXiv",
-  SLACcitation  = "%%CITATION=HEP-TH/9108028;%%"
-}
-\end{verbatim}
-will include the arXiv.org e-print identifier as \texttt{arXiv:hep-th/9108028} and hyperlink it (if using \texttt{hyperref}). The newer format for arXiv identifiers with primary classifications will produce appropriate output  For example,
-
-\begin{verbatim}
-@Unpublished{Ginsparg:2014,
-      author = "Ginsparg, Paul",
-      title = "{Kenneth G. Wilson: Renormalized After-Dinner Anecdotes}",
-      year = "2014",
-      eprint = "1407.1855",
-      archivePrefix = "arXiv",
-      primaryClass = "physics.hist-ph",
-}
-\end{verbatim}
-will generate \texttt{arXiv:1407.1855 [physics.hist-ph]} and hyperlink it.
-
-\subsubsection{\texttt{noeprint} option}
-In the \revtex~4.2 Bib\TeX\ style files, the behavior of the \texttt{noeprint} option was changed to only suppress the arXiv identifiers for journal references, but keep them for e-print references.
-
-\subsubsection{\label{sec:datacitations}Citing data sets with a DOI}
-Bib\TeX\ styles in \revtex~4.2 add support for citing data sets using the new Bib\TeX\ type \texttt{@dataset}:
-
-\begin{verbatim}
-@dataset{haigh:2016,
- author = "Haigh, J. A. and Lambert, N. J. and 
-   Sharma, S. and Blanter, Y. and
-   Bauer, G. E. W. and Ramsay, A. J.",
- year = "2018",
- title = "{Data from Figures in``Selection rules 
-  for cavity-enhanced Brillouin light scattering
-  from magnetostatic modes" [Data set]}",
- doi = "10.5281/zenodo.1284434",
- note = "{Zenodo}"
-}
-\end{verbatim}
-This results in the formatted reference: ``J. A. Haigh, N. J. Lambert, S. Sharma, Y. Blanter, G. E. W. Bauer, and A. J. Ramsay, Data from Figures in ``Selection
-rules for cavity-enhanced Brillouin light scattering from magnetostatic modes" [Data set], 10.5281/zenodo.1284434 (2018),
-Zenodo."
-
-This is primarily intended for data sets that have a DOI assigned to them.
-
-\subsubsection{\label{sec:doiref}Journal references with only DOIs}
-Some journals have moved to using only a volume and DOI to identify an article and do not assign page numbers or article identifiers. In the \texttt{apsrev.bst} Bib\TeX\ style file used for the \textit{Phys. Rev.} journals, If the \texttt{pages} field is absent from an entry in the \texttt{bib} file, but the \texttt{doi} field is present, the DOI will be explicitly displayed and linked in the formatted reference.
-
-\subsubsection{\label{sec:jhep}Journals that use the year and issue for unique citations}
-The \texttt{apsrev.bst} style used for \textit{Phys. Rev.} journals now includes support for four journals that use the year in place of a volume and require an explicit issue to uniquely cite a paper:
-
-\begin{itemize}
- \item J. High Energy Phys.
- \item J. Cosmol. Astropart. Phys.
- \item J. Instrum.
- \item J. Stat. Mech.: Theory Exp.
- \end{itemize}
- 
- The Bib\TeX\ entry must \textbf{exactly} match one of the these four abbreviated journal names or use the corresponding macro, \texttt{jhep}, \texttt{jcap}, \texttt{jinst}, or \texttt{jstat}, resp., to invoke the proper formatting. For example:
-
-\begin{verbatim}
-@Article{Cotogno2017,
-   author="Cotogno, Sabrina and van Daal, Tom
-                 and Mulders, Piet J.",
-  title="Positivity bounds on gluon {TMDs} 
-           for hadrons of spin $\le$ 1",,
-  journal=jhep,
-  year="2017",
-  month="Nov",
-  day="28",
-  volume="2017",
-  number="11",
-  pages="185",
-  doi="10.1007/JHEP11(2017)185",
-  url="https://doi.org/10.1007/JHEP11(2017)185"
-}
-\end{verbatim}
-will be formatted as  ``S. Cotogno, T. van Daal, and P. J. Mulders, Positivity bounds on gluon TMDs for hadrons of spin $\le$ 1, J. High Energy Phys. 2017 (11), 185."
-
-\subsection{\label{sec:multiple}Multiple references in a single bibliography entry}
-\revtex~4.2 allows multiple references within a single bibliography entry when using Bib\TeX. This done by using a starred (*) argument to the \cmd\cite\ command, and it requires a compatible version of \texttt{natbib} and the \texttt{bst} files that come with \revtex~4.2. To combine multiple references into a single \cmd\bibitem, precede the second, third, etc. citation keys in the \cmd\cite\ command with an asterisk (*). For example \verb+\cite{bethe, *feynman, *bohr}+ will combine the \cmd\bibitem\relax s with keys \texttt{bethe}, \texttt{feynman}, and \texttt{bohr} into a single entry in the bibliography separated by semicolons.
-
-\subsection{\label{sec:prepend}Prepending and/or appending text to a citation}
-The expanded syntax for the  \cmd\cite\ command argument can also be used to specify text before and/or after a citation. For instance, a citation such as:
-\begin{verbatim}
-[19] A similar expression was derived in
-A. V. Andreev, Phys. Rev. Lett. 99, 247204
-(2007) in the context of carbon nanotube
-p-n junctions. The only difference is that no
-integration over ky is present there.
-\end{verbatim}
-may be created by the following \cmd\cite\ command:
-\begin{verbatim}
-\cite{*[{A similar expression was derived
-in }] [{ in the context of carbon nanotube
-p-n junctions. The only difference is that
-no integration over ky is present
-there.}] andreev2007}
-\end{verbatim}
-Please note the use of curly braces to enclose the text within the square brackets as well as the spaces next to the brackets.
-
-
-
-\section{Figures and Artwork}\label{sec:figures}
-\subsection{\texttt{figure} environment}
-
-Figures may be included into a \revtex~4.2 manuscript by using the
-standard \LaTeXe\ macros. It should be noted that \LaTeXe\ includes
-several powerful packages for including the files in various
-formats. The two main packages are \classname{graphics} and
-\classname{graphicx}. Both offer a macro called
-\cmd\includegraphics\oarg{args}\marg{filename}; 
-they mainly differ in how arguments for
-controlling figure scaling, translation, and orientation
-are specified. For more information on the enhancements of the \classname{graphicx} package, 
-see \cite{CompanG} or the guide \file{grfguide.pdf} available at
-\url{http://www.ctan.org/tex-archive/macros/latex/required/graphics/}.
-\revtex~4.2 no longer has the \classoption{epsf} class option, though
-the \classname{epsfig} package provides a similar interface.
-
-
-The \env{figure} environment should be used to add a caption to the figure and
-to allow \LaTeX\ to number and place the figures where they fit best. 
-\LaTeX\  will label and automatically number the captions FIG.~1,
-FIG.~2, etc. For example:
-\begin{verbatim}
-\begin{figure}
- \includegraphics{fig1.eps}
- \caption{\label{fig1}Text of first caption.}
-\end{figure}
-\end{verbatim}
-Note how the \cmd\label\marg{key} command is used to cross-reference
-figures in text. The \cmd\label\marg{key} command should be inserted
-inside the figure caption. As usual, the \cmd\ref\marg{key} macro can
-then by used to refer to the label: ``As depicted in
-FIG.\verb+~\ref{fig1}+\dots''.
-
-Figures are normally set to the width of the column in
-which they are placed. This means that in two-column mode, the figure
-will be placed in a single, narrow column. For wide figures, the
-\cmd\figure\verb+*+ environment should be used
-instead. This will place the figure across both columns (the figure
-usually will
-appear either at the top or the bottom of the following page).
-
-
-Captions less than one line long are centered under the figure,
-otherwise they span the width of the figure.
-
-Note that is unnecessary (and undesirable) to use explicit centering
-commands inside the float environments.
-
-\subsection{\texttt{video} environment}
-Papers often refer to multimedia material such as videos. The \texttt{video} environment is identical to the \texttt{figure} environment, but the caption will be labeled as a \textbf{Video} (with its own counter independent of figures). A URL can also be specified so that the caption label can be linked to the online video (if using the \texttt{hyperref} package). The included graphic (using \cmd\includegraphics\ from the \texttt{graphics} or \texttt{graphicx} package) would be a representation frame from the video. A \texttt{\cmd\listofvideos} is also provided.  For example:
-\begin{verbatim}
-\begin{video}
-\includegraphics{videoframe.jpg}
-\setfloatlink{http://some.video.com/fun.mov}
-\caption{\label{vid:interest}This is a video
-of something fun.}
-\end{video}
-\end{verbatim}
-There is also a corresponding \cmd\listofvideos\ command.
-
-\section{Tables}\label{sec:tables}
-
-Tables are very similar to figures. They should be input using the
-\env{table} environment as detailed below, and 
-\LaTeX\ will label and number the captions TABLE~1, TABLE~2, etc.
-(or in whatever format required by the chosen journal
-substyle). Tables without captions won't be numbered.
-
-Each table must begin with \envb{table}, end with \enve{table}. A
-caption can be specified using the \cmd\caption\marg{text} command.
-Captions less than one line long are centered under the figure,
-otherwise they span the width of the figure.
-To refer to the table via cross-referencing, a \cmd\label\marg{key}
-command should appear within the \cmd{\caption}.  Use the
-\cmd\ref\marg{key} command to cite tables in text. The \env{table}
-environment will set the table to the width of the column. Thus, in
-two-column mode, the table will be confined to a single column. To set a
-table to the full width of the page, rather than the column, use the
-\env{table*} environment.
-
-The heart of the table is the
-\env{tabular} environment. This will behave for the most part as in
-standard \LaTeXe\ (please refer to Section~3.6.3 and Appendix~C.10.2 of the
-\LUG{} for more details about the \env{tabular} environment).
-Note that \revtex~4.2 no longer automatically adds double (Scotch) rules
-around tables. Nor does the \env{tabular} environment set various
-table parameters for column spacing as before. Instead, a new
-environment \env{ruledtabular} provides this functionality. This
-environment should surround the \env{tabular} environment:
-\begin{verbatim}
-\begin{table}
-\caption{\label{<key>}....}
-\begin{ruledtabular}
-\begin{tabular}
-...
-\end{tabular}
-\end{ruledtabular}
-\end{table}
-\end{verbatim}
-
-A basic table looks as follows:
-\begin{verbatim}
-\begin{table}
-\caption{\label{tab:ex}Text of table caption.}
-\begin{ruledtabular}
-\begin{tabular}{ll}
-  Heading 1 & Heading 2\\
-  Cell 1 & Cell 2\\
-\end{tabular}
-\end{ruledtabular}
-\end{table}
-\end{verbatim}
-
-The \env{quasitable} environment is no longer in \revtex~4.2. The
-standard \env{tabular} environment can be used instead because it
-no longer puts in the double rules.
-
-\subsection{Aligning on a decimal point}
-Numerical columns should align on the decimal point (or
-decimal points if more than one is is present). This is accomplished
-by again using a standard \LaTeXe\ package, \classname{dcolumn} which
-must be loaded in the manuscript's preamble:
-\begin{verbatim}
-\usepackage{dcolumn}
-\end{verbatim}
-Once this package is loaded, the column specifier `\texttt{d}' can be
-used in the table's \env{tabular}\marg{preamble} enviroment preamble.
-The `\texttt{d}' should be used for simple numeric data with a single
-decimal point.
-%
-The entry of a \texttt{d} column is typeset in math mode; do not
-insert any \verb+$+ math delimiters into a `\texttt{d}' column.  Items
-without a decimal point are simply set in math mode, centered.  If
-text is required in the column, use \cmd\text\ or \cmd\mbox\ as
-appropriate.  If multiple decimal points are present then the last is
-used for alignment. To escape from the `\texttt{d}' column use
-\cmd\multicolumn\ as usual. See the sample file \file{apssamp.tex} for examples.
-
-\subsection{Footnotes in Tables}\label{sec:tablenote}
-
-Footnotes in a table are labeled \emph{a}, \emph{b}, \emph{c},
-etc. They can be specified by using the \LaTeX\ \cmd\footnote\
-command. Furthermore,
-\cmd\footnotemark\ and \cmd\footnotetext\ can be used so that multiple entries
-can to refer to the same footnote. The footnotes for a table are typeset
-at the bottom of the table, rather than at the bottom of the page or
-at the end of the references. The arguments for \cmd\footnotemark\ and
-\cmd\footnotetext\ should be numbers 1, 2, \dots. The journal style
-will convert these to letters.  See sample file \file{apssamp.tex} for
-examples and explanations of use.
-
-\subsection{Dealing with Long Tables}
-By default, tables are set in a smaller size than the text body
-(\cmd\small). The \cmd\squeezetable\ declaration makes the table font
-smaller still (\cmd\scriptsize).  Thus, putting the
-\cmd\squeezetable\ command before the \envb{table} line in a table
-will reduce the font size. If this isn't sufficient to fit
-the table on a page, the standard \LaTeXe\ \classname{longtable}
-package may be used. The scope of the
-\cmd\squeezetable\ command must be limited by enclosing it with a group:
-\begin{verbatim}
-\begingroup
-\squeezetable
-\begin{table}
-[...]
-\end{table}
-\endgroup
-\end{verbatim}
-
-Tables are normally set to the width of the column in
-which they are placed. This means that in two-column mode, the table
-will be placed in a single, narrow column. For wide tables, the
-\cmd\table\verb+*+ environment should be used
-instead. This will place the table across both columns (the table
-usually will
-appear either at the top or the bottom of the following page).
-
-
-To break tables across pages, \revtex~4.2 requires adding to the
-table a float placement option of [H] (meaning put the table ``here''
-and effectively ``unfloating'' the table) to the \envb{table}
-command. The commands \verb+\\*+ and \cmd{\samepage} can be used to
-control where the page breaks occur (these are the same as for the
-\env{eqnarray} environment).
-
-Long tables are more robustly handled by using the
-\classname{longtable.sty} package included with the standard \LaTeXe\
-distribution (put \verb+\usepackage{longtable}+ in the preamble). This
-package gives precise control over the layout of the table.
-The \revtex~4.2 package contains patches that enable the
-\classname{longtable} package to work in two-column mode. Of course, a
-table set in two-column mode needs to be narrow enough to fit within
-the column. Otherwise, the columns may overlap. \revtex~4.2 provides
-an additional environment \env{longtable*} which allows a longtable to
-span the whole page width. Currently, the \env{longtable*} and
-\env{ruledtabular} environments are incompatible. In order to get the
-double (Scotch) rule, it is necessary to add the \verb+\hline\hline+
-manually (or define \verb+\endfirsthead+ and \verb+\endlastfoot+
-appropriately).  For more documentation on the \env{longtable}
-environment and on the package options of the
-\classname{longtable} package, please see the documentation available at
-\url{http://www.ctan.org/macros/latex/required/tools/longtable.dtx} or
-refer to \cite{Compan}.
-
-\section{Placement of Figures, Tables, and Other Floats}
-\label{sec:place}
-
-By default, figures and tables (and any other ``floating'' environments
-defined by other packages) float to the top or bottom of the page
-using the standard \LaTeX\ float placement mechanism.  Initially, each
-\env{figure} or \env{table} environment should be put immediately
-following its first reference in the text; this will usually result in
-satisfactory placement on the page.  An optional argument for either 
-environment adjusts the float placement. For example:
-\begin{quote}
-\envb{figure}\oarg{placement}\\
-\dots\\
-\enve{figure}
-\end{quote}
-where \meta{placement} can be any combination of \verb|htbp!|, signifying
-``here'', ``top'', ``bottom'', ``page'', and ``as soon as possible'',
-respectively. The same placement argument may be added to a
-\envb{table}. For more details about float placement, 
-see the instructions in the \LUG, Appendix~C.9.1.
-
-In two-column mode, a page may contain both a \env{widetext}
-environment and a float. \revtex~4.2 may not always be able to
-automatically put the float in the optimal place. For instance, a
-float may be placed at the bottom of a column just before the
-\env{widetext} begins. To workaround this, try moving the float
-environment below the \env{widetext} environment. Alternative
-\meta{placements} may also alleviate the problem.
-
-\env{figure} and \env{table} environments should not 
-be enclosed in a \env{widetext} environment to make them span
-the page to accommodate wide figures or tables. Rather, the
-\env{figure*} or \env{table*} environments should be used instead.
-
-Sometimes in \LaTeX\ the float placement mechanism breaks down and a
-float can't be placed. Such a ``stuck'' float may mean that it and all
-floats that follow are moved to the end of the job (and if there are
-too many of floats, the fatal error \texttt{Too many unprocessed floats}
-will occur). \revtex~4.2 provides the class option
-\classoption{floatfix} which attempts to invoke emergency float
-processing to avoid creating a ``stuck'' float. \revtex~4.2 will provide
-a message suggesting the use of
-\classoption{floatfix}. If \classoption{floatfix} doesn't work or if
-the resulting positioning of the float is poor, the float should be
-repositioned by hand.
-
-\revtex~4.2 offers an additional possibility for placing the floats. By
-using the either the \classoption{endfloats} or the
-\classoption{endfloats*} class option all floats may be held
-back (using an external file) and then set elsewhere in the document
-using the the commands \cmd\printtables\ and \cmd\printfigures{},
-placed where the tables and figures are to be printed (usually at the
-end of the document).  (This is similar to the standard
-\cmd\printindex\ command). Using a \texttt{*}-form of the commands
-(\cmd\printfigures\verb+*+ and
-\cmd\printtables\verb+*+) will begin the figures
-or tables on a new page. Alternatively, the option
-\classoption{endfloats*} may be used to change the behavior of the
-non-\texttt{*}-forms so that every float will appear on a separate
-page at the end.
-
-Without one of the \classoption{endfloats} class options, these float
-placement commands are silently ignored, so it is always safe to use
-them.  If one of the \classoption{endfloats} class options is given,
-but the \cmd\printtables\ command is missing, the tables will be
-printed at the end of the document. Likewise, if \cmd\printfigures\ is
-missing, the figures will be printed at the end of the document.
-Therefore it is also safe to omit these commands as long as \revtex's
-default choices for ordering figures and tables are satisfactory.
-
-The \classoption{endfloats} option (or perhaps some journal substyle
-that invokes it), requires explicit \envb{figure}, \enve{figure},
-\envb{table}, and \enve{table} lines. In particular, do \emph{not}
-define typing shortcuts for table and figure environments, such as
-\begin{verbatim}
-\def\bt{\begin{table}}% Incompatible!
-\def\et{\end{table}}%
-\end{verbatim}
-
-Please note that it is generally undesirable to have all floats moved
-to the end of the manuscript. APS no longer requires this for
-submissions. In fact, the editors and referees will have an easier time
-reading the paper if the floats are set in their normal positions.
-
-\section{Rotating Floats}
-
-Often a figure or table is too wide to be typeset in the standard
-orientation and it is necessary to rotate the float 90
-degrees. \revtex~4.2 provides a new environment \env{turnpage} as an
-easy means to accomplish this. The \env{turnpage} environment depends
-on one of the packages \classname{graphics} or \classname{graphicx}
-being loaded. To use the \env{turnpage} environment, simply enclose
-the \env{figure} or \env{table} environment with the \env{turnpage}
-environment:
-\begin{verbatim}
-\documentclass[...]{revtex4-2}
-\usepackage{graphicx}
-[...]
-\begin{turnpage}
-\begin{figure} or \begin{table}
-[...]
-\end{figure} or \end{table}
-\end{turnpage}
-\end{verbatim}
-A turnpage float will be typeset on a page by itself. Currently, there
-is no mechanism for breaking such a float across multiple pages.
-
-\section{\revtex~4.2 symbols and the \classname{revsymb4-2} package}
-
-Symbols made available in earlier versions of \revtex\ are
-defined in a separate package, \classname{revsymb4-2},
-so that they may be used with other classes.
-This might be useful if, say, copying text from a \revtex\ document to
-a non-\revtex\ document. \revtex~4.2 automatically includes these
-symbols so it is not necessary to explicitly call them in with a 
-\cmd\usepackage\ statement.
-
-Table~\ref{tab:revsymb} summarizes the symbols defined in this package.
-Note that \cmd{\overcirc}, \cmd{\overdots}, and \cmd{\corresponds} are
-no longer in \revtex~4.2. Use \cmd{\mathring} (standard in \LaTeXe),
-\cmd{\dddot} (with the \classoption{amsmath} package loaded), and 
-\cmd\triangleq\ (with the \classoption{amssymb} class option) respectively.
-\cmd{\succsim}, \cmd{\precsim}, \cmd{\lesssim}, and \cmd{\gtrsim} are
-also defined either in \classname{amsmath} or \classname{amssymb}. The
-AMS versions of these commands will be used if the appropriate AMS
-package is loaded.
-
-\begin{table}
-\caption{\label{tab:revsymb}Special \revtex~4.2 symbols, accents, and
-boldfaced parentheses defined in \file{revsymb.sty}}
-\begin{ruledtabular}
-\begin{tabular}{ll|ll}
-\cmd\lambdabar & $\lambdabar$ &\cmd\openone & $\openone$\\
-\cmd\altsuccsim & $\altsuccsim$ & \cmd\altprecsim & $\altprecsim$ \\
-\cmd\alt & $\alt$ & \cmd\agt & $\agt$ \\
-\cmd\tensor\ x & $\tensor x$ & \cmd\overstar\ x & $\overstar x$ \\
-\cmd\loarrow\ x & $\loarrow x$ & \cmd\roarrow\ x & $\roarrow x$  \\
-\cmd\biglb\ ( \cmd\bigrb ) & $\biglb( \bigrb)$ &
-\cmd\Biglb\ ( \cmd\Bigrb )& $\Biglb( \Bigrb)$ \\
-& & \\
-\cmd\bigglb\ ( \cmd\biggrb ) & $\bigglb( \biggrb)$ &
-\cmd\Bigglb\ ( \cmd\Biggrb\ ) & $\Bigglb( \Biggrb)$ \\
-\end{tabular}
-\end{ruledtabular}
-\end{table}
-
-\section{Other \revtex~4.2 Features}
-%\subsection{Hooks}
-%To be written....
-
-\subsection{Job-specific Override Files}
-\revtex~4.2 allows manuscript-specific macro definitions to be put
-in a file separate from the main \TeX\ file. One merely creates a file
-with the same basename as the \TeX\ file, but with the extension
-`.rty'. Thus, if the \TeX\ file is names man.tex, the macro
-definitions would go in man.rty. Note that the .rty file should be in
-the same directory as the \TeX\ file. APS authors should follow the
-guidelines in the \textit{APS Author Guide for \revtex~4.2} when
-submitting. Similarly, AIP authors should refer to the \textit{Author's Guide to AIP Substyles for \revtex~4.2}
-
-
-\begin{thebibliography}{}\label{sec:TeXbooks}
-\bibitem[Knuth(1986)]{TeXbook} D.E. Knuth, \emph{The \TeX book},
-(Addison-Wesley, Reading, MA, 1986).
-\bibitem[Lamport(1996)]{LaTeXman} L. Lamport, \emph{\LaTeX, a Document
-Preparation System}, (Addison-Wesley, Reading, MA, 1996).
-\bibitem[Kopka(1995)]{Guide} H. Kopka and P. Daly, \emph{A Guide to
-\LaTeXe}, (Addison-Wesley, Reading, MA, 1995).
-\bibitem[Goossens(1994)]{Compan} M. Goossens, F. Mittelbach, and
-A. Samarin, \emph{The \LaTeX\
-Companion}, (Addison-Wesley, Reading, MA, 1994).
-\bibitem[Goossens(1997)]{CompanG} M. Goossens, S. Rahtz, and
-F. Mittelbach, \emph{The
-\LaTeX\ Graphics Companion}, (Addison-Wesley, Reading, MA, 1997).
-\bibitem[Rahtz(1999)]{CompanW} S. Rahtz, M. Goossens, \emph{et
-al.},\emph{The \LaTeX\ Web Companion}, (Addison-Wesley, Reading, MA, 1999).
-\end{thebibliography}
-
-\end{document}
-
diff --git a/texmf/doc/latex/revtex/auguide/docs.sty b/texmf/doc/latex/revtex/auguide/docs.sty
deleted file mode 100644
index f401506..0000000
--- a/texmf/doc/latex/revtex/auguide/docs.sty
+++ /dev/null
@@ -1,129 +0,0 @@
-% authguide.rty - macros for processing revguide.tex under \documentclass{revtex4}
-% Text entities
-\DeclareRobustCommand\SNG{\emph{Physical Review Style and Notation Guide}}
-\DeclareRobustCommand\LUG{\emph{\LaTeX{} User's Guide \& Reference Manual}}
-\DeclareRobustCommand\revtex{REV\TeX}
-\DeclareRobustCommand\marglat{\marginpar[\textbf{2e}]{\textbf{2e}}} 
-\DeclareRobustCommand\margrev{\marginpar[\textbf{4}]{\textbf{4}}} 
-\DeclareRobustCommand\AmS{%
- {\protect\the\textfont\tw@ A\kern-.1667em\lower.5ex\hbox{M}\kern-.125emS}%
-}%
-\DeclareRobustCommand\AmSLaTeX{\AmS-\LaTeX}
-\DeclareRobustCommand\BibTeX{{\rm B}{\sc ib}\TeX}
-%
-% Various forms of self-indexing commands:
-%    \begin{macrocode}
-\DeclareRobustCommand{\m}[1]{%
- \meta{#1}%
- \index{#1=\string\meta{#1} placeholder}\index{placeholder>#1=\string\meta{#1}}%
-}%
-\DeclareRobustCommand\meta[1]{%
- \mbox{\m@th\LANGLE\itshape#1\/\RANGLE}%
-}%
-\def\LANGLE{$\langle$}%
-\def\RANGLE{$\rangle$}%
-\DeclareRobustCommand{\marg}[1]{%
- {\ttfamily\string{}\meta{#1}{\ttfamily\string}}%
- \index{#1=\string\ttt{#1}, argument}\index{argument>#1=\string\ttt{#1}}%
-}%
-\DeclareRobustCommand{\aarg}[1]{%
- {\ttfamily\string{}#1{\ttfamily\string}}%
-}%
-\let\oarg\undefined
-\DeclareRobustCommand{\oarg}[1]{%
- {\ttfamily[%]
-  }\meta{#1}{\ttfamily%[
- ]}%
- \index{#1=\string\ttt{#1}, optional argument}%
- \index{argument, optional>#1=\string\ttt{#1}}%
-}%
-\DeclareRobustCommand\cmd{\begingroup\makeatletter\@cmd}%
-\long\def\@cmd#1{%
- \endgroup
- \cs{\expandafter\cmd@to@cs\string#1}%
- \expandafter\cmd@to@index\string#1\@nil
-}%
-\def\cmd@to@cs#1#2{\char\number`#2\relax}%
-\def\cmd@to@index#1#2\@nil{%
- \index{#2=\string\cmd#1#2}%\index{command>#2=\string\cmd#1#2}%
-}%
-\DeclareRobustCommand\cs[1]{{\ttfamily\char`\\#1}}%
-\def\scmd#1{%
- \cs{\expandafter\cmd@to@cs\string#1}%
- \expandafter\scmd@to@index\string#1\@nil
-}%
-\def\scmd@to@index#1#2\@nil#3{%
- \index{\string$#3=\string\cmd#1#2---#3}%
-%\index{command>\string$#3=\string\cmd#1#2---#3}%
-}%
-\DeclareRobustCommand\env{\name@idx{environment}}%
-\DeclareRobustCommand\envb[1]{%
- {\ttfamily\string\begin\string{}\env{#1}{\ttfamily\string}}%
-}%
-\DeclareRobustCommand\enve[1]{{\ttfamily\string\end\string{}\env{#1}{\ttfamily\string}}}%
-\DeclareRobustCommand*{\file}[1]{%
- {\ttfamily#1}%
- \index{#1=\string\ttt{#1}}\index{file>#1=\string\ttt{#1}}%
-}%
-\DeclareRobustCommand\substyle{\name@idx{document substyle}}%
-\DeclareRobustCommand\classoption{\name@idx{document class option}}%
-\DeclareRobustCommand\classname{\name@idx{document class}}%
-\def\name@idx#1#2{%
- {\ttfamily#2}%
- \index{#2\space#1=\string\ttt{#2}\space#1}\index{#1>#2=\string\ttt{#2}}%
-}%
-%
-% Needed for index:
-%
-\def\ttt{\texttt}%
-\def\pfill{\ }%
-\def\efill{\ }%
-\let\scan@allowedfalse\relax
-%\makeindex
-\AtEndDocument{\@input@{\jobname.ind}\null}%
-%
-% Processing options
-%
-%
-% Layout: override revtex4|aps
-\c@secnumdepth2
-\prepdef\@verbatim{\topsep.5\baselineskip}%
-\renewenvironment{quotation}{%
- \list{}{%
-    \listparindent 10\p@
-    \itemindent\listparindent
-    \leftmargin10\p@
-    \rightmargin\leftmargin
-    \parsep \z@ \@plus\p@
-    \small
- }%
- \item[]%
-}{%
- \endlist
-}%
-\renewenvironment{quote}{%
- \list{}{%
-  \leftmargin\z@
-  \rightmargin\leftmargin
- }\item[]%
-}{%
- \endlist
-}%
-\leftmargini\parindent
-\def\descriptionlabel#1{%
-  \hspace\labelsep\ignorespaces
-  #1\unskip
-}%
-\def\toprule{\hline\hline\frstrut}%
-\def\colrule{\hline\frstrut}%
-\def\frstrut{\vrule height2.5ex width\z@ depth\z@\relax}%
-\def\lrstrut{\vrule height\z@ width\z@ depth.5ex\relax}%
-%
-% Klootches
-%
-\let\savenofiles\nofiles
-%
-% Patches:
-%
-%
-\endinput
diff --git a/texmf/doc/latex/revtex/auguide/summary4-2.pdf b/texmf/doc/latex/revtex/auguide/summary4-2.pdf
deleted file mode 100644
index 4738c9f..0000000
--- a/texmf/doc/latex/revtex/auguide/summary4-2.pdf
+++ /dev/null
diff --git a/texmf/doc/latex/revtex/auguide/summary4-2.tex b/texmf/doc/latex/revtex/auguide/summary4-2.tex
deleted file mode 100644
index 7ba76a1..0000000
--- a/texmf/doc/latex/revtex/auguide/summary4-2.tex
+++ /dev/null
@@ -1,372 +0,0 @@
-%% ****** Start of file summary4-2.tex ****** %
-%%
-%%   This file is part of the APS files in the REVTeX 4 distribution.
-%%   Version 4.2b of REVTeX, January, 2019
-%%
-%%   Copyright (c) 2019 American Physical Society.
-%%
-%%   See the REVTeX 4.2 README file for restrictions and more information.
-%%
-\listfiles
-\documentclass[%
-twocolumn,secnumarabic,amssymb, amsmath, nofootinbib,tightenlines,
-nobibnotes, aps, 
-prl,
-%outputdebug,
-]{revtex4-2}
-%\usepackage{amsmath}%
-\usepackage{longtable}%
-\usepackage{bm}%
-\usepackage{docs}
-%\usepackage[colorlinks=true,linkcolor=blue]{hyperref}%
-%\nofiles
-\expandafter\ifx\csname package@font\endcsname\relax\else
- \expandafter\expandafter
- \expandafter\usepackage
- \expandafter\expandafter
- \expandafter{\csname package@font\endcsname}%
-\fi
-
-\begin{document}
-
-\title[Command Option Summary]{\revtex~4.2 Command and Options Summary}%
-
-\author{American Physical Society}%
-\email{revtex@aps.org}
-\affiliation{1 Research Road, Ridge, NY 11961}
-\date{December 2018}%
-\maketitle
-
-This is the \textit{\revtex~4.2 Command and Options Summary}. It details
-usage for many of the  commands and options that are available in
-\revtex~4.2. Please see the \textit{\revtex~4.2 Author's Guide} for
-complete information on how to use \revtex~4.2.  Class options for the
-\verb+\documentclass+ line are marked with square
-brackets. Environments are indicated by \verb+\begin{<env>}+ and always
-require a matching \verb+\end{<env>}+.
-
-\setlength\LTleft{0pt}
-\setlength\LTright{0pt}
-%
-\begin{longtable*}{@{\extracolsep{0in}}p{3in}p{4in}}
-\caption{\label{tab:summary}\revtex~4.2 Command Summary}\\*
-%
-\noalign{\vspace{3pt}}%
-\toprule\rule{0pt}{12pt}
-\textbf{\revtex~4/\LaTeXe\ Markup}&\textbf{Details and Usage}\\*[3pt]
-\endfirsthead
-%
-\multicolumn{2}{c}{TABLE~\ref{tab:summary} (continued): \revtex~4.2 Command Summary}%
-\rule{0pt}{12pt}\\[3pt]
-\colrule\rule{0pt}{12pt}
-\textbf{\revtex~4/\LaTeXe\ Markup}&\textbf{Details and Usage}\\*[3pt]
-\endhead
-%
-\noalign{\nobreak\vspace{3pt}}%
-\colrule
-\endfoot
-%
-\noalign{\nobreak\vspace{3pt}}%
-\botrule
-\endlastfoot
-%
-\multicolumn{2}{c}{\textsc{Frequently Used Class Options}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+[aps]+ & \textit{American Physical Society} styling. Default.\\
-\verb+[aip]+ & \textit{American Institute of Physics} styling.\\
-\verb+[aapm]+ & \textit{American Association of Physicists in Medicine} styling.\\
-\verb+[sor]+ & \textit{Society of Rheology} styling.\\
-\verb+[prl]+, \verb+[pra]+, \verb+[prb]+, \verb+[prc]+, \verb+[prd]+, \verb+[pre]+, \verb+[prab]+, \verb+[prper]+, \verb+[prx]+, \verb+[prapplied]+,  \verb+[prfluids]+,  \verb+[prmaterials]+, \verb+[physrev]+, \verb+[rmp]+& Further customize \verb+[aps]+ styling for APS journals.\\
-\verb+[apl]+, \verb+[bmf]+, \verb+[cha]+, \verb+[jap]+, \verb+[jcp]+, \verb+[jmp]+, \verb+[rse]+, \verb+[pof]+, \verb+[pop]+, \verb+[rsi]+, \verb+[apm]+, \verb+[adv]+, \verb+[sd]+& Further customize \verb+[aip]+ styling for AIP journals.\\
-\verb+[mph]+& Further customize \verb+[aapm]+ styling for AAPM journals.\\
-\verb+[jor]+& Further customize \verb+[sor]+ styling for SOR journals.\\
-\verb+[twocolumn]+ & Two-column formatting.\\
-\verb+[onecolumn]+ & Single-column formatting.\\
-\verb+[preprint]+ & Single-column formatting with increased interline spacing.\\
-\verb+[reprint]+ & Closely approximate a given journal's style. Can be either single or two-column formatting depending on the journal.\\
-\verb+[10pt]+, \verb+[11pt]+, \verb+[12pt]+ & Set font size. \verb+[preprint]+ gives \verb+[12pt]+, \verb+[twocolumn]+ gives
-\verb+[10pt]+ by default.\\
-\verb+[groupedaddress]+ & Group authors with same affiliations together. Default. \\
-\verb+[superscriptaddress]+ & Associate authors with affiliations via superscript numbers. Appropriate for collaborations or if several authors share some, but not all, affiliations.\\
-\verb+[draft]+ & Mark overfull lines.\\
-\verb+[linenumbers]+ & Number lines (requires lineno.sty).\\
-\verb+[longbibliography]+ & Use alternative Bib\TeX\ style files that show journal article titles in the bibliography. (Unnecessary in 4.2.)\\
-\verb+[amsfonts]+, \verb+[noamsfonts]+ & Load (don't load)
-\verb+amsfonts+ package. Adds AMS font support.\\
-\verb+[amssymb]+, \verb+[noamssymb]+ & Load (don't load)
-\verb+amssymb+ package. Adds additional AMS symbols.\\
-\verb+[amsmath]+, \verb+[noamsmath]+ & Load (don't load)
-\verb+amsmath+ package. Adds AMS-\LaTeX\ features.\\
-%
-\multicolumn{2}{c}{\textsc{Other Class Options}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+[preprintnumbers]+, \verb+[nopreprintnumbers]+ & Control display of preprint numbers given by \verb+\preprint+ command. \verb+[preprintnumbers]+ is default for \verb+[preprint]+; otherwise \verb+[nopreprintnumbers]+ is default.\\
-\verb+[floatfix]+ & Invoke emergency processing to avoid the \LaTeX\ error \verb+``Too many unprocessed floats''+ or all subsequent floats being moved to the end of the job. \revtex~4 will display a message recommending this option if warranted.\\
-\verb+[bibnotes]+, \verb+[nobibnotes]+ & Control location of author footnotes. Default varies with journal style.\\
-\verb+[footinbib]+, \verb+[nofootinbib]+ & Control location of footnotes. Default varies with journal style.\\
-\verb+[eprint]+, \verb+[noeprint]+ & Control display of arXiv e-print identifiers in bibliography. Default and behavior vary with journal sty.\\
-\verb+[altaffilletter]+, \verb+[altaffillsymbol]+ & Use letters or symbols for
-\verb+\altaffiliation+ superscripts. \verb+[altaffillsymbol]+ is default.\\
-\verb+[unsortedaddress]+ & Like \verb+[groupedaddress]+, but doesn't combine authors together who share the same affiliations.\\
-\verb+[runinaddress]+ & Like \verb+[groupedaddress]+, but joins multiple affiliations together into a single sequence separated by commas.\\
-\verb+[showkeys]+, \verb+[noshowkeyws]+ & Control display of Keywords: line.\\
-\verb+[tightenlines]+ & Single space manuscript (for use with \verb+[preprint]+).\\
-\verb+[floats]+ & Position floats near call outs. Default.\\
-\verb+[endfloats]+ & Move all floats to the end of the document.\\
-\verb+[endfloats*]+ &  Move all floats to the end of the document and put each on a separate page.\\
-\verb+[titlepage]+, \verb+[notitlepage]+ & Control appearance of title page.\\
-\verb+[final]+ & Don't mark overfull lines. Default.\\
-\verb+[letterpaper]+, \verb+[a4paper]+, \verb+[a5paper]+ & Select paper size. \verb+[letterpaper]+ is default.\\
-\verb+[oneside]+, \verb+[twoside]+ & Control book syle layout. \verb+[oneside]+ is default.\\
-\verb+[fleqn]+ & Flush displayed equations left. \\
-\verb+[eqsecnum]+ & Number equations by section.\\
-\verb+[balancelastpage]+, \verb+[nobalancelastpage]+ & Control
-\verb+[twocolumn]+ balancing on last page. \verb+[balancelastpage]+ is default.\\
-\verb+[raggedbottom]+, \verb+[flushbottom]+ & Control \verb+[twocolumn]+ balancing. \verb+[flushbottom]+ is default.\\
-\verb+[raggedfooter]+, \verb+[noraggedfooter]+ & Control positioning of footer. \verb+[noraggedfooter]+ is default.\\
-\verb+[byrevtex]+ & Display ``Typeset by \revtex~4''.\\
-\verb+[citeautoscript]+ & Fix up spacing and punctuation when switching from non-superscript style citations to superscript citation styles. \verb+\cite+ commands and associated spacing and punctuation should be as for the non-superscript style.\\
-\verb+[galley]+ & Typeset in a single narrow column.\\
-\verb+[nomerge]+ & Allows processing of legacy documents that use square brackets as part of the key in a \verb+cite+ command.\\
-%
-\multicolumn{2}{c}{\textsc{Frontmatter Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\title{<title>}+ & The manuscript title.\\
-\verb+\author{One Author}+ & Specify one author's name.\\
-\verb+\surname{Lloyd Weber}+, \verb+\surname{Mao}+ & Indicate which part of a name within
-\verb+\author+ should be used for alphabetizing and indexing.\\
-\verb+\email[<optional text>]{author@any.edu}+& Specify an e-mail address for an author.\\
-\verb+\homepage[<optional text>]+ \verb+    {http://any.edu/homepage/}+& Specify a URL for an author's web site.\\
-\verb+\altaffiliation[optional text]+ \verb+    {affiliation information}+&Specify an alternate or temporary address for an author.\\
-\verb+\thanks{text}+& Additional information about an author not covered by the more specific macros above.\\
-\verb+\collaboration{<The Collaboration>}+ & Specify a collaboration name for a group of authors. Should be placed after the authors. \\
-\verb+\affiliation{text}+ & Specify a single affiliation. Applies to all previous authors without a specified affiliation.\\
-\verb+\noaffiliation+ & For an author or collaboration without an affiliation.\\
-\verb+\date{<date>}+ &  Show the date on the manuscript. \verb+\date{\today}+ gives the current date.\\
-\verb+\begin{abstract}+ & Start the manuscript's abstract. Must appear before \verb+\maketitle+ command.\\
-\verb+\keywords{<keywords>}+ & Suggested keywords for indexing.\\
-\verb+\preprint{<report number>}+ & Specify an institutional report number to appear in the upper-righthand corner of the first page. Multiple 
-\verb+\preprint+ macros may be supplied, but space may limit how many can appear.\\
-\verb+\maketitle+ & Typeset the title/author/abstract block.\\
-%
-\multicolumn{2}{c}{\textsc{Sectioning Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\section{<heading>}, \subsection{<heading>}+,
-\verb+\subsubsection{<heading>}+ & Start a new section or subsection.\\
-\verb+\section*{<heading>}+ & Start a new section without a number.\\
-\verb+\appendix+ & Makes all following sections appendices.\\
-\verb+\appendix*+ & Signifies there is a single appendix section to follow.\\
-\verb+\begin{acknowledgments}+ & Start an Acknowledgments section. Note spelling.\\
-\verb+\lowercase{<text>}+ & Escape a letter or word from being uppercased in a top-level \verb+\section+ heading.\\
-%
-\multicolumn{2}{c}{\textsc{Citation, Footnote, and Cross-referencing Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\bibliography{<bib file basename>}+ & Specify a list of .bib
-files in which to find references. Read in the resulting .bbl file.  For use with Bib\TeX\ . \\
-\verb+\bibliographystyle{<bst stylefile>}+ & Specify a Bib\TeX\ (.bst) style file to use. APS journal options select the proper default (\texttt{apsrev} or \texttt{apsrmp}).\\
-\verb+\begin{thebibliography}+ & Start the reference section (when not using Bib\TeX). \\
-\verb+\bibitem[<optional text>]{<key>}+ & Specify a single reference.\\
-\verb+\cite{<list of keys>}+ & Cite one or more references. \verb+<key>+ is same as that of \verb+\bibitem+. Prepend a * in front of a key to merge the reference with the previous one in the bibliography.\\
-\verb+\cite{*[{<prepended>}][{<appended>}]{<keys>}+  & Prepend and/or append text to a bibliography entry. Note use of curly braces within the square brackets.\\
-\verb+\onlinecite{<key>}+ & For superscript style citations, place the corresponding number on the baseline rather than as a superscript.\\
-\verb+\bibinfo[<tag>]{<text>}+ & A pure markup macro that adds tagging information to the components of a reference. \revtex~4 Bib\TeX\ style files automatically add them appropriately. Doesn't affect the typesetting.\\
-\verb+\url{<url>}+ & Typeset a URL (\revtex~4 automatically loads \texttt{url.sty}).Bib\TeX\ styles automatically add this markup.\\
-\verb+\eprint{<e-print id>}+ & Typeset an e-print identifier. Bib\TeX\ styles automatically add this markup.\\
-\verb+\footnote{<text>}+ & Create a footnote or endnote in bibliography depending on class options. \verb+\footnote+ within a table will create a footnote attached to the table.\\
-\verb+\footnotemark{<key>}+, \verb+\footnotetext[<key>]{<text>}+ & In a table, allows for multiple items to share the note. \\
-\verb+\label{<key>}+ & Label an item for cross-referencing. \verb+\label+ should appear within the argument of the cross-referenced item (e.g., \verb+\section{\label{<key>}...}+ or \verb+\caption{\label{<key>}...}+.\\
-\verb+\ref{<key>}+ & Refer to an item labeled by \verb+\label{<key>}+.\\
-\verb+\pageref{<key>}+ & Refer to the page on which an item labeled by \verb+\label{<key>}+ appears.\\
-%
-\multicolumn{2}{c}{\textsc{Math and Equation Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+$+ & Inline math delimiter.\\
-\verb+\begin{equation}+ & Display numbered one-line equation.\\
-\verb+\[+, \verb+\]+ & Display unnumbered one-line equation.\\
-\verb+\begin{eqnarray}+ & Display multiple equations together or a
-long equation that requires multiple lines. Use \verb+widetext+
-environment for an equation that must span the page in two-column formatting.\\
-\verb+\nonumber+ & Suppress numbering of an equation with
-\verb+eqnarray+.\\
-\verb+\begin{eqnarray*}+ & Display multiple equations with no equation
-numbering at all.\\
-\verb+&+ & Alignment character for equations within \verb+eqnarray+.\\
-\verb+\\+ & End a row in \verb+eqnarray+.\\
-\verb+\\*+ & Prevent a page break at this point in an
-\verb+eqnarray+.\\
-\verb+\label{<key>}+ & Label an equation or group of equations for
-cross-referencing.\\
-\verb+\ref{<key>}+ & Refer to an equation by its label (e.g.,
-\verb+Eq~(ref{<key>})+).\\
-\verb+\tag{<key}}+ & Specify an alternative labeling separate from the
-automatic numbering of equations. Requires \verb+[amsmath]+.\\
-\verb+\text{<text>}+ & Non-italicized text within a math
-context. Requires \verb+[amsmath]+. Do not use \verb+\rm+,
-\verb+\textrm+, or \verb+\mbox+.\\
-%
-\multicolumn{2}{c}{\textsc{Some} AMS-\LaTeX\ \textsc{Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\begin{split}+ & Split equations with alignment.\\
-\verb+\begin{multline}+ & Split equations without alignment.\\
-\verb+\begin{align}+ & Equation groups with alignment.\\
-\verb+\begin{gather}+ & Equation groups without alignment.\\
-\verb+\begin{subequations}+ & Create an equation array in which each
-equation is individually numbered (4a, 4b, 4c, etc.) as part of a
-single group of equations that can be referenced as a whole.\\
-\verb+\intertext+ & Textual interjections within a display equation.\\
-\verb+\usepackage{amscd}+ & Create commutative diagrams.\\
-\verb+\begin{pmatrix}+ & Matrices with parentheses as delimiters.\\
-\verb+\begin{bmatrix}+ & Matrices with square brackets as delimiters.\\
-\verb+\begin{Bmatrix}+ & Matrices with curly braces as delimiters.\\
-\verb+\begin{vmatrix}+ & Matrices with vertical bars as delimiters.\\
-\verb+\begin{Vmatrix}+ & Matrices with double vertical bars as
-delimiters.\\
-\verb+\hdotsfor+ & Row of dots in a matrix.\\
-\verb+\Hat+ & Alternative \verb+\hat+ accent for stacking.\\
-\verb+\Check+ & Alternative \verb+\check+ accent for stacking.\\
-\verb+\Tilde+ & Alternative \verb+\tilde+ accent for stacking.\\
-\verb+\Acute+ & Alternative \verb+\acute+ accent for stacking.\\
-\verb+\Grave+ & Alternative \verb+\grave+ accent for stacking.\\
-\verb+\Dot+ & Alternative \verb+\dot+ accent for stacking.\\
-\verb+\Ddot+ & Alternative \verb+\ddot+ accent for stacking.\\
-\verb+\Breve+ & Alternative \verb+\breve+ accent for stacking.\\
-\verb+\Vec+ & Alternative \verb+\vec+ accent for stacking.\\
-\verb+\xleftarrow+ & Extensible left arrow.\\
-\verb+\xrightarrow+ & Extensible right arrow.\\
-\verb+\overset+ & Place a symbol over another.\\
-\verb+\underset+ & Place a symbol under another.\\
-\verb+\lvert+ & Vertical bar with spacing rules appropriate for use as
-a left delimiter.\\
-\verb+\rvert+ & Vertical bar with spacing rules appropriate for use as
-a right delimiter.\\
-\verb+\lVert+ & Double vertical bar with spacing rules appropriate for use as
-a left delimiter.\\
-\verb+\rVert+ & Double vertical bar with spacing rules appropriate for use as
-a right delimiter.\\
-\verb+\DeclareMathOperator+ & Declare a new math operator so that
-spacing and font is correct.\\
-\verb+\text+ & Words and phrases in display math.\\
-\verb+\boldsymbol+ & Make symbol bold. Also available in bm.sty.\\
-\verb+\sideset+ & Sets subscripts and superscripts at the corners of a
-summation or product.\\
-\verb+\substack+ & Create a stack of subexpressions (for example,
-stacked summation limits).\\
-\verb+\begin{subarray}+ & Like \verb+\substack+, but allows finer
-control of subexpression alignment.\\
-\verb+\mathfrak+ & Replaces \verb+\frak+.\\
-\verb+\mathbb+ & Replaces \verb+\Bbb+.\\
-%
-\multicolumn{2}{c}{\textsc{Font Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\textbf{<text>}+ & Text boldface font.\\
-\verb+\textit{<text>}+ & Text italicixed font.\\
-\verb+\textrm{<text>}+ & Text Roman font.\\
-\verb+\textsl{<text>}+ & Text Slanted font.\\
-\verb+\textsc{<text>}+ & Text Small Caps font.\\
-\verb+\textsf{<text>}+ & Text Sans Serif font.\\
-\verb+\textmd{<text>}+ & Text Medium Series font.\\
-\verb+\textnormal{<text>}+ & Text Normal Series font.\\
-\verb+\textup{<text>}+ & Text Upright Series font.\\
-\verb+\texttt{<text>}+ & Text Typewriter font.\\
-\verb+\mathit{<text>}+ & Math italics font. \\
-\verb+\mathbf{<text>}+ & Math boldface font.\\
-\verb+\mathtt{<text>}+ & Math typewriter font.\\
-\verb+\mathsf{<text>}+ & Math sans serif font.\\
-\verb+\mathcal{<text>}+ & Math calligraphic font. \\
-\verb+\mathfrak{<text>}+ & Math fraktur font. Requires
-\verb+[amsfonts]+ or \verb+[amssymb]+.\\
-\verb+\mathbb{<text>}+ & Math blackboard bold font. Requires
-\verb+[amsfonts]+ or \verb+[amssymb]+.\\
-\verb+\bm{<text>}+ & Bold math symbols (Greek and other symbols). Requires \verb+\usepackage{bm}+.\\
-%
-\multicolumn{2}{c}{\textsc{Table Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\begin{table}[<placement>]+ & Start a table float environment set to the
-current column width. The
-placement options may be any combination of h, t, b, p, or ! signifying
-here, top, bottom, page, and ``as soon as possible'',
-respectively. A placement option of H will allow a long table to break
-across pages. \LaTeX\ may not be able to honor placement
-requests.\\
-\verb+\begin{table*}+ & Start a non-floating table environment set to the
-current page width. Will be deferred to the following page.\\
-\verb+\begin{ruledtabular}+ & Adds \textit{Physical Review} style double
-(Scotch) rules around a table and adjusts the intercolumn spacing.\\
-\verb+\begin{tabular}[<position>]{<column specs>}+ & The
-\verb+\tabular+ envrionment sets the positions and the  number of
-columns (as well as alignment) in the table.\\
-\verb+\begin{tabular*}{<width>}[<pos>]{<col specs>}+ & Like
-\verb+tabular+, but with a set width.\\
-\verb+\squeezetable+ & Set table in a smaller font smaller. Place this
-macro before the \verb+\begin{table}+ line and sandwich everything
-between \verb+\begingroup+ and \verb+\endgroup+.\\
-\verb+\begin{longtable}{<column specs>}+ & Create a table set to the current column
-width that spans more than one
-page or column. \verb+\usepackage{longtable}+ required.\\
-\verb+\begin{longtable*}{<column specs>}+ & Create a table set to the
-current page width that spans more than one page. \verb+\usepackage{longtable}+ required.\\
-\verb+\caption{<text>}+ & Adds a caption for the table.\\
-\verb+\printtables+ & With \verb+[endfloats]+, control where the
-held back tables actually appear.\\
-\verb+\begin{turnpage}+ & Rotate a table or figure by 90 degrees
-(landscape mode). Will put figure or table on a page by
-itself. Requires \verb+\graphics+ package.\\
-%
-\multicolumn{2}{c}{\textsc{Graphics Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\begin{figure}[<placement>]+ & Start a figure float environment
-set to the current column width.
-The placement options may be any combination of h, t, b, p, or ! signifying
-here, top, bottom, page, and ``as soon as possible'',
-respectively.  A placement option of H will allow a long table to break
-across pages. \LaTeX\ may not be able to honor placement
-requests.\\
-\verb+\begin{figure*}+ & Start a non-floating figure environment set
-to the current page width. Will be deferred to the following page.\\
-\verb+\includegraphics[<scale,rotation>]+\verb+{fig file}+& Defined
-by invoking either \verb+\usepackage{graphics}+ or
-\verb+\usepackage{graphicx}+, the standard \LaTeXe\ packages for calling
-in figures. \verb+graphicx+ is the same as \verb+graphics+, but uses
-key-value pairs for optional arguments.\\
-\verb+\usepackage{epsfig}+ & Provides an alternative interface to the
-\verb+graphics+ package similar to the epsf class option in \revtex~3.\\
-\verb+\printfigures+ &  With \verb+[endfloats]+, control where the
-held back figures actually appear.\\
-%
-\multicolumn{2}{c}{\textsc{Miscellaneous Commands}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\begin{widetext}+ & Change column width to be the page
-width. Will add guiding rules.\\
-\verb+\twocolumngrid+ & Low-level switch to a two column layout.\\
-\verb+\onecolumngrid+ & Low-level switch to a single page-wide column layout.\\
-\verb+\protect+ & Protect a fragile command within a macro with a
-``moving'' argument. \verb+\caption+ and \verb+\footnote+ are common
-macros that have moving arguments.\\
-\verb+\frac{numerator}{denominator}+ & Create a fraction. Use in place of \verb+\over+.\\
-%
-\multicolumn{2}{c}{\textsc{\revtex~4 and Miscellaneous Symbols}\rule[-6pt]{0pt}{18pt}}\\*
-\verb+\textemdash+ & \textemdash\\
-\verb+\textendash+ & \textendash\\
-\verb+\textexclamdown+ & \textexclamdown\\
-\verb+\textquestiondown+ & \textquestiondown\\
-\verb+\textquotedblleft+ & \textquotedblleft\\
-\verb+\textquotedblright+ & \textquotedblright\\
-\verb+\textquoteleft+ & \textquoteleft\\
-\verb+\textquoteright+ & \textquoteright\\
-\verb+\textbullet+ & \textbullet\\
-\verb+\textperiodcentered+ & \textperiodcentered\\
-\verb+\textvisiblespace+ & \textvisiblespace\\
-\verb+\textcompworkmark+ & Break a ligature.\\ % ``fluffier''
-%vs. ``f\textcompworkmark luf\textcompworkmark fier''.\\
-\verb+\textcircled{<char>}+ & Circle a character. \textcircled{e}.\\
-\verb+\lambdabar+ & $\lambdabar$ \\
-\cmd\openone & $\openone$\\
-\cmd\altsuccsim & $\altsuccsim$ \\
-\cmd\altprecsim & $\altprecsim$ \\
-\cmd\alt & $\alt$ \\
-\cmd\agt & $\agt$ \\
-\cmd\tensor\ x & $\tensor x$ \\
-\cmd\overstar\ x & $\overstar x$ \\
-\cmd\loarrow\ x & $\loarrow x$ \\
-\cmd\roarrow\ x & $\roarrow x$  \\
-\verb+\mathring{x}+ & $\mathring{x}$ (Replaces
-\verb+\overcir+). Standard \LaTeXe\ . \\
-\verb+\dddot{x}+ & $\dddot{x}$ (Replaces \verb+\overdots+). Requires \verb+[amsmath]+.\\
-\verb+\triangleq+ & $\triangleq$ (Replaces
-\verb+\corresponds+). Requires \verb+[amssymb]+.\\
-\cmd\biglb\ ( \cmd\bigrb ) & $\biglb( \bigrb)$ \\
-\cmd\Biglb\ ( \cmd\Bigrb ) & $\Biglb( \Bigrb)$ \\
-\cmd\bigglb\ ( \cmd\biggrb ) & $\bigglb( \biggrb)$ \\
-\cmd\Bigglb\ ( \cmd\Biggrb\ ) & $\Bigglb( \Biggrb)$ 
-\end{longtable*}
-
-\end{document}