\documentclass[12pt]{article}
\usepackage{fontspec,microtype,booktabs,parskip}
\setmainfont{Clara}
\title{Clara fonts with \LaTeX\ support}
\author{Daniel Benjamin Miller\thanks{\texttt{dbmiller@dbmiller.org}}}
\begin{document}
\maketitle
\section{Description}
Clara is a type family created specially by Séamas Ó Brógáin for printing \textit{A Dictionary of Editing} (2015). The family includes italic, bold, bold italic, and small capitals, while the character set includes (monotonic) Greek, Cyrillic, ogham, phonetic and mathe­matical ranges, scribal abbrevi­ations and other specialist characters. The fonts also include some Open­Type features (such as ligature substi­tution, small capitals, and old-style numerals) and variant forms for particular languages.
\section{Usage}
\subsection{OpenType version with \texttt{fontspec}}
To use the font with \texttt{fontspec}, simply add to the preamble:
\begin{verbatim}
\usepackage{fontspec}
\setmainfont{Clara}
\end{verbatim}
This will allow the use of the full range of OpenType features. For more detail, see the documentation for \texttt{fontspec}.
\subsection{Type 1 version with \texttt{clara}}
If you are using an older \TeX\ engine such as pdf\TeX\ to produce your documents, Clara may be used as follows:
\begin{verbatim}
\usepackage[T1]{fontenc}
\usepackage{clara}
\end{verbatim}
The following options are available with the \texttt{clara} package. For information on usage with \texttt{fontspec}, see that package's documentation.

\begin{tabular}{@{} ll @{}}
\toprule
Package Option & Feature \\
\midrule
\texttt{lining} & Use lining figures (default)\\
\texttt{oldstyle} & Use old-style figures\\
\bottomrule
\end{tabular}

Additionally, the following text commands are made available by \texttt{clara}:

\begin{tabular}{@{} ll @{}}
\toprule
Text Command & Feature \\
\midrule
\texttt{\textbackslash lining\{\}} & Use lining figures\\
\texttt{\textbackslash oldstyle\{\}} & Use old-style figures\\
\texttt{\textbackslash textsc\{\}} & Use small capitals\\
\texttt{\textbackslash textsu\{\}} & Use superior figures\\
\texttt{\textbackslash textin\{\}} & Use inferior figures\\
\bottomrule
\end{tabular}
\section{Licensing}
Copyright © 2015 Séamas Ó Brógáin.

These fonts are distributed, at your option, under the terms of the \textsc{sil} Open Font License or the \textsc{gnu} General Public License, either version 2.0 or, at your option, any later version. As a special exception, if you create a document that uses this font, and embed this font or unaltered portions of this font in the document, this font does not by itself cause the resulting document to be covered by the \textsc{gnu} General Public License. This exception does not, however, invalidate any other reasons why the document might be covered by the \textsc{gnu} General Public License. For full terms, see \texttt{COPYING}.
\end{document}