Function: When the plugin Translate text (table-based) is configured and assigned to a document or presentation, this is where the bookmark (term) is matched by language chosen in the User Profile, and inserted into the document.
Example of a Translations table:
Term: Bookmark in document (Fax = LAN_Fax)
IANA: en-GB, de-DE, etc. refers to the language choice made in a User Profile.