This package implements a document layout for writing letters according to the rules of DIN (Deutsches Institut für Normung, German standardisation institute). A style file for LaTeX 2.09 (with limited support of the features) is part of the package. Since the letter layout is based on a German standard, the user guide is written in German, but most macros have English names from which the user can recognize what they are used for. In addition there are example files showing how letters may be created with the package.