\documentclass{sintefletter}
\recipient{SINTEF Employees\\
Trondheim, Oslo \& c.\\
NORWAY}
\project{SIN\TeX}
\yourref{$-$}
\ourref{$-$}
\name{Federico Zenith}
\begin{document}
\frontmatter
Dear all,
Here is the \texttt{sintefletter} class. This class allows you
to write letters in the SINTEF reference template from \LaTeX\ with
minimal effort.
The class inherits from the generic \texttt{sintefdoc}; see its
documentation for language and custom-data settings.
To set up the headings, insert the command \verb|\frontmatter|
right after \verb|\begin{document}|.
Some commands are available to set the fields in the first page's
header:
\begin{description}
\item[\texttt{\textbackslash recipient}] the recipient's address;
\item[\texttt{\textbackslash yourref}] the recipient's reference;
\item[\texttt{\textbackslash ourref}] SINTEF's reference;
\item[\texttt{\textbackslash project}] SINTEF's project code.
\end{description}
The date is set with the standard \verb|\date| command.
\closing{Best regards}
\end{document}