You can use LaTeX to typeset letters, both personal and business. The
letter document style is designed to make a number of letters at
once, although you can make just one if you so desire.
Your `.tex' source file has the same minimum commands as the other document styles, i.e., you must have the following commands as a minimum:
\documentstyle{letter}
\begin{document}
... letters ...
\end{document}
Each letter is a letter environment, whose argument is the name
and address of the recipient. For example, you might have:
\begin{letter}{Mr. Joe Smith\\ 2345 Princess St.
\\ Edinburgh, EH1 1AA}
...
\end{letter}
The letter itself begins with the \opening command. The text of
the letter follows. It is typed as ordinary LaTeX input. Commands that
make no sense in a letter, like \chapter, don't work. The letter
closes with a \closing command.
After the closing, you can have additional material. The
\cc command produces the usual "cc: ...". There's also a similar
\encl command for a list of enclosures.