\documentclass[a4paper,english]{brev}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\name{\texttt{\textbackslash name\{\}}}
\address{\texttt{\textbackslash address\{\}}\\1234 City}
\telephone{\texttt{\textbackslash telephone\{\}}}
\location{\texttt{\textbackslash location\{\}}}
\signature{\texttt{\textbackslash signature\{\}}}
\begin{document}
\date{\texttt{\textbackslash date\{\}}}
\yourref{\texttt{\textbackslash yourref\{\}}}
\ourref{\texttt{\textbackslash ourref\{\}}}
\begin{letter}{Recipient\\mailing\\address\\1234 city}
\opening{\texttt{\textbackslash opening\{\}}}
This is the text of the letter

\closing{\texttt{\textbackslash closing\{\}}}
\cc{\texttt{\textbackslash cc\{\}}}
\encl{\texttt{\textbackslash encl\{\}}}
\ps
\texttt{\textbackslash ps}
\end{letter}
\end{document}
