\documentclass[english,unit=imfau]{aultrdesign} 
\usepackage{babel}
\begin{document}
\begin{ColophonData}
  \signature{Lars Madsen}
  \casenumber{1234}
  \reference{lm}
\end{ColophonData}

% use this to record the text for the information area, i.e. the area
% similar to the receiver address area in an ordinary letter
\begin{InformationArea}
  \faxreceiver{Lars Madsen}
  \receiverfaxnumber{+99 12345678}
  \numberofpagesinfax{5}
\end{InformationArea}

\begin{fax}

\opening{Regarding your request}

The data is included in the following pages.

\closing{Regards,}

\end{fax}

\end{document}
