The package provides a command \uselangcode{<code>} to adjust language-dependent settings such as key words, typographical conventions and language codes (ISO 639-1).

The package provides a means of selecting macros according to the specified code, for preparing a document that is to be separately typeset in different laguages.

The package is dependent on the plainpkg package, and is already in use in the morehype and catcodes packages.

The author is Uwe Lück. The package is Copyright © 2012 Uwe Lück.