Simple language-dependent settings based on language codes
Description
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.
