Note 1. Alphabetized by language name (not by language code), this is not a complete list of language codes – these are only the ISO 639 codes that are presently used to categorize redirects using the rcat, ((R from alternative language)). The two-, three- or four-letter codes are used in that template's 1st or 2nd parameter to denote the "from" or "to" language. To be listed on this page, a language code's language must be found as a subcategory of one or both of the following categories: