A PDF/XeLaTeX export template for Texts (http://www.texts.io) for a more complex article. Numbered sections, a separate title page and page headers/footers. Put this file in ~/Library/Application Support/Texts. Restart Texts and when you choose `File > Export > Export PDF/Export XeLaTeX` the `Templates` drop down at the bottom of the file choose…

complex-article.xelatex

%% Complex report template
%  Suitable for longer reports:
%  Titlepage, numbered sections, more complex page headers/footers
\documentclass[11pt,a4paper,twoside,openany,final,article]{memoir}
\usepackage{polyglossia}                                

% change the language and variant for your own needs                              
\setdefaultlanguage[variant=british]{english}

% use standard math symbols
\usepackage{amssymb}

% for \text inside formulas and for \eqref
\usepackage{amsmath}
\usepackage[math-style=ISO]{unicode-math}
\usepackage[svgnames]{xcolor}

% you may not have these fonts on your system to customise this as required
\usepackage{fontspec}
\defaultfontfeatures{Ligatures=TeX}
\newfontfeature{Microtype}{protrusion=default;expansion=default;}
\setmainfont[Microtype,Ligatures=TeX,Numbers=OldStyle]{Minion Pro}
\setsansfont[Microtype,Scale=MatchLowercase,Ligatures=TeX]{Myriad Pro}
\setmonofont[Microtype,Scale=MatchLowercase,Scale=0.9]{Courier New}

% set paragraph spacing
% no indent, one baseline between paragraphs
\setlength{\parindent}{0pt}
\setlength{\parskip}{\baselineskip}

% Set margins and page layout
\usepackage[left=2.5cm,right=2.5cm,top=2.5cm,bottom=3cm]{geometry}

% prevent overfull lines
\setlength{\emergencystretch}{3em}

% for \includegraphics
\usepackage{graphicx}

% for exact placement of figures
\usepackage{float}

% for footnotes in tables
\usepackage{longtable}

% for hyperlinks
\usepackage[colorlinks,urlcolor=DarkRed,filecolor=DarkRed,linkcolor=DarkRed,citecolor=black]{hyperref}
\usepackage[all]{hypcap}
\urlstyle{same}

%% Make the style for Chapters and sections
%  Used kjh's styles as a starting point:
%  https://github.com/kjhealy/latex-custom-kjh/blob/master/needs-memoir/memoir-article-styles.sty
\makechapterstyle{article-sans}{
    \setsecheadstyle{\color{MidnightBlue}\large\sffamily\bfseries} 
    \setsubsecheadstyle{\color{MidnightBlue}\normalsize\sffamily\bfseries}
    \setsubsubsecheadstyle{\color{MidnightBlue}\normalsize\sffamily\itshape}
    \renewcommand{\printchaptername}{} 
    \renewcommand{\chapternamenum}{} 
    \renewcommand{\chapnumfont}{\chaptitlefont} 
    \renewcommand{\printchapternum}{\chapnumfont \thechapter\space} 
    \renewcommand{\afterchapternum}{} 
    \renewcommand{\printchaptername}{\secheadstyle}
    \renewcommand{\cftchapterfont}{\normalfont} 
    \renewcommand{\cftchapterpagefont}{\normalfont\sffamily} 
    \renewcommand{\cftchapterpresnum}{\sffamily} 
    %\renewcommand{\cftchapterleader}{} 
    %\renewcommand{\cftchapterafterpnum}{\cftparfillskip}
    \captiontitlefont{\small}
    %\settocdepth{chapter}
    \setsecnumdepth{subsubsection}
    \settocdepth{subsubsection}
    \counterwithout{section}{chapter}

    %% reduce skip after section heading
    \setaftersecskip{1.7ex}

    %% set name of bibliography to 'references'
    %%\renewcommand{\bibname}{\mdseries\Large\sffamily References}

     % Titlepage layout
    \pretitle{\par\vskip 3em 
        \begin{center}\Huge\sffamily\bfseries\hrule\vskip 0.5em}
    \posttitle{\end{center}\par\vskip 0.5em\hrule}
    \preauthor{\begin{center}\Large\vskip 3em}
    \postauthor{\end{center}}
    \predate{\begin{center}\normalsize}
    \postdate{\end{center}}

    %% 'abstract' bigger skip from title
    \addto\captionsamerican{\renewcommand*{\abstractname}{}}
    \renewcommand{\abstractnamefont}{\normalfont\scriptsize}
    \renewcommand{\abstracttextfont}{\normalfont\scriptsize}
    \abstractrunin

}


\makepagestyle{ruled-sans} % Make ruled-sans pagestyle

\makeatletter                 % Define ruled-sans pagestyle
% \makeheadfootruleprefix{ruled-sans}{\color{LightSlateGrey}}{\color{LightSlateGrey}}
\makeevenfoot{ruled-sans}{\sffamily\thepage}{}{} %
\makeoddfoot{ruled-sans}{}{}{\sffamily\thepage}  %
\makeevenhead{ruled-sans}{\sffamily\small\leftmark}{}{}
\makeoddhead{ruled-sans}{}{}{\sffamily\small\rightmark}
\makeheadrule{ruled-sans}{\textwidth}{\normalrulethickness}
\makeatother                  %

\makeatletter
\makepsmarks{ruled-sans}{
\createmark{chapter}{left}{nonumber}{\today }{}
\createmark{section}{both}{shownumber}{}{ \quad }
\createplainmark{toc}{both}{\contentsname}
\createplainmark{lof}{both}{\listfigurename}
\createplainmark{lot}{both}{\listtablename}
\createplainmark{bib}{both}{\bibname}
\createplainmark{index}{both}{\indexname}
\createplainmark{glossary}{both}{\glossaryname}
}
\makeatother                               %

\nouppercaseheads
\pagestyle{ruled-sans}               % Choosing pagestyle and chapter pagestyle
\chapterstyle{article-sans}
\tightlists

% Make figures as wide as the margins
% Determine if the image is too wide for the page.
\makeatletter
\def\ScaleIfNeeded{%
  \ifdim\Gin@nat@width>\linewidth
    \linewidth
  \else
    \Gin@nat@width
  \fi
}
\makeatother

% Resize figures that are too wide for the page.
\let\oldincludegraphics\includegraphics
\renewcommand\includegraphics[2][]{%
  \oldincludegraphics[width=\ScaleIfNeeded]{#2}
}

% define info for titlepage
% At the moment this has to be hard coded, which is fiddly for the title
\def\mytitle{Title}
\def\myauthor{Your Name}
\def\myaffiliation{Your Affiliation}
\def\myemail{\href{mailto:email@example.com}{email@example.com}}


\begin{document}



\begin{titlingpage}
    
    \title{\mytitle}

    \author{\myauthor \\
      \emph{\myaffiliation} \\ \myemail}

    \date{\today} 
    \maketitle

\end{titlingpage}

$body$

\end{document}