template.tex

%!TEX TS-program = xelatex
%!TEX encoding = UTF-8 Unicode

\documentclass[$fontsize$, a4paper]{article}
\usepackage{fontspec}

% LAYOUT
%--------------------------------
\usepackage{geometry}
\geometry{$geometry$}

% No page numbers
\pagenumbering{gobble}

% Left align
\usepackage[document]{ragged2e}

% Trim excessive whitespace before lists
\usepackage{enumitem}
\setlist{nolistsep}

$if(letterhead)$
\usepackage{wallpaper}
% \ThisULCornerWallPaper{1}{letterhead-front.pdf} % Uncomment to include a different letterhead on the first page
\ULCornerWallPaper{1}{letterhead.pdf}
$endif$

% LANGUAGE
%--------------------------------
$if(lang)$
\usepackage{polyglossia}
\setmainlanguage{$lang$}
$endif$

% TYPOGRAPHY
%--------------------------------
\usepackage{xunicode}
\usepackage{xltxtra}
\usepackage[protrusion=true,final]{microtype}

% converts LaTeX specials (quotes, dashes etc.) to Unicode
\defaultfontfeatures{Mapping=tex-text}
\setromanfont [Ligatures={Common}, Numbers={OldStyle}]{$mainfont$}
\setsansfont[Scale=0.9]{$altfont$}
\setmonofont[Scale=0.8]{$monofont$}

% Set paragraph break
\setlength{\parskip}{1em}

% Custom ampersand
\newcommand{\amper}{{\fontspec[Scale=.95]{$mainfont$}\selectfont\itshape\&}}

$if(mainfont)$
    \setmainfont{$mainfont$}
$endif$
$if(altfont)$
    \setsansfont{$altfont$}
$endif$

% Command required by how Pandoc handles the list conversion
\providecommand{\tightlist}{%
  \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}

% PDF SETUP
%--------------------------------
\usepackage[xetex, bookmarks, colorlinks, breaklinks]{hyperref}
\hypersetup
{
  pdfauthor={$author$},
  pdfsubject={$subject$},
  pdftitle={$subject$},
  colorlinks,breaklinks,
  filecolor=black,
  urlcolor=[rgb]{0.117,0.682,0.858},
  linkcolor=[rgb]{0.117,0.682,0.858},
  linkcolor=[rgb]{0.117,0.682,0.858},
  citecolor=[rgb]{0.117,0.682,0.858}
}

% To display custom date in the example
$if(customdate)$
\usepackage[$lang$]{datetime2}
\DTMsavedate{customdate}{$customdate$}
$endif$

% DOCUMENT
%--------------------------------
\begin{document}
\small
\textsc{\textbf{$author$}}
$for(from)$
\textbullet{} \textsc{$from$}
$endfor$

\vspace{1em}

\normalsize \sffamily
$for(to)$
$to$\\
$endfor$

\vspace{3em}

\rmfamily
\begin{flushright}
  $city$, $if(customdate)$\DTMusedate{customdate}$else$\today$endif$
\end{flushright}

\vspace{1em}

$if(subject)$
\textbf{$subject$}
$endif$

\vspace{1em}

$body$

\begin{FlushRight}
  \IfFileExists{signature.pdf}
  {
    \includegraphics[height=5.5\baselineskip]{signature.pdf} \par
  }
  {
    \vspace{5.5\baselineskip}
  }
  $author$
\end{FlushRight}

\end{document}