main.tex

%\documentclass[twocolumn]{aastex62}
%\documentclass[onecolumn]{aastex62}
\documentclass[modern]{aastex62}

\shorttitle{LSST Community Brokers}
\shortauthors{Guy, Bellm, Graham}

\usepackage{collect}
\usepackage[colorinlistoftodos]{todonotes}

\graphicspath{{./}{./figures/}}

% Environment for recommendations
\providecommand{\secref}[1]{\hyperref[#1]{Section~\ref{#1}}}
\providecommand{\appref}[1]{Appendix~\ref{#1}}
\providecommand{\tabref}[1]{Table~\ref{#1}}
\providecommand{\figref}[1]{Figure~\ref{#1}}
\providecommand{\eqnref}[1]{Eq.~\ref{#1}}
\providecommand{\recref}[1]{\hyperref[#1]{REC-\ref{#1}}}

%Counter for recommendations
\newcounter{reccount} 
\newenvironment{recenv}[1]
    { % empty more or less but we need it so we can refer to it.
    \refstepcounter{reccount}  %increment the counter for each recomendation
    #1
    }

% Recommendations collection
\definecollection{nrecommendations}
%chapter, audience, term, 
%label (rec:label for references), title, full text
\newcommand{\nrec}[3]{ 
	\begin{recenv}
	\vspace{5pt}
	\noindent \textbf{REC-\thereccount~#2}.     
	%\textbf{Area:} #1.  \textbf{Audience:} #2. \textbf {Term:} #3
	\newline \label{rec:#1}\noindent \textit{#3}
	\vspace{5pt}
	\end{recenv}
    % collecting  for output :
    \begin{collect}{nrecommendations}{}{}
        \noindent \textbf{REC-\ref{rec:#1}~#2}.
	%\newline \textbf{Area:} #1.  \textbf{Audience:} #2. \textbf {Term:} #3
        \newline \textit{#3}.
        \newline See page \pageref{rec:#1}. \vspace{10pt}
     \end{collect}
\typeout{REC-\thereccount: #1: #2: #3 :END}
}

% Use these macros for commenting
\newcommand{\ECB}[2][]{\todo[color=blue!30, #1]{EB: #2}}
\newcommand{\MLG}[2][]{\todo[color=red!30, #1]{MLG: #2}}
\newcommand{\LPG}[2][]{\todo[color=cyan!30, #1]{LPG: #2}}

%\newcommand{\docRef}{LSST-Community-Broker-Workshop}
%\newcommand{\docUpstreamLocation}{\url{https://github.com/lsst-dmsst/LSST-Community-Broker-Workshop}}

\begin{document}
\input{authors}
\date{\today}
\title{Transient Alert Brokers in the LSST Era.}

\input{abstract}
\keywords{LSST, Astronomy, Astrophysics, Algorithms, Brokers, Community Brokers,  {Data Management}, Alerts, Computing,  {HTC}, Networking, Machine Learning, Cloud}

% Only needed while this is a work in progress. Remove for circulation. 
\listoftodos
\clearpage

\input{introduction}
\input{recommendations}
\input{science}
\input{alertproduction}
\input{precursor}
\input{eventbrokers}
\input{algorithms}
\input{interfaces}
\input{archandtech}
\input{followup}
\input{conops}
\input{conclusions}

\input{acknowledgements}
% \facility{LSST}

%\appendix
% Remove this when you strart your paper
%\input{appendix}

	% Include all the relevant bib files.
% https://lsst-texmf.lsst.io/lsstdoc.html#bibliographies
%\section{References} \label{sec:bib}
%\bibliographystyle{plainnat}
\bibliographystyle{yahapj}
\bibliography{brokers}
%\bibliography{brokers}

% Make sure lsst-texmf/bin/generateAcronyms.py is in your path
\section{Acronyms} \label{sec:acronyms}
\input{acronyms.tex}

%\listofchanges

\end{document}