An advanced letter document class which extends LaTeX's usual letter class, providing support for building your own letterhead and marking fold points for window envelopes. Options supported by the package include: letterpaper for US letter; a4offset for a modified A4 layout suitable for platic binders that cover a part of the left margin.

The class’s handling of dates has inspired an extended version of date-handling in the isodate package.

The class supersedes an earlier class called myletter.

See also dinbrief envlab formlett.

The author is Axel Kielhorn. The package is Copyright © 1994-1999 Axel Kielhorn.