Template:Redirect from alternative language category/doc

Usage
This template is placed in the subcategories of. It requires as its first parameter, 1, the ISO 639 code of the "from" language. As is common with unnamed parameters, the may be omitted. For example:

The code "ca" is the ISO 639 code for the Catalan language.

This template places pages in a subcategory that is governed by the pagename of the category where this template is transcluded. To suppress this template's subcategory when necessary, use true.