You name a new language file IPFxxx.NLS where xxx is unique for the language you want to use. Name your new file with xxx as different letters than any of the three-letters used in the "ID" column in the table "The 3-Letter Identifier for the /LANGUAGE and -l: xxx Parameter". For example, to create a new language called Pidgeon, an appropriate NLS filename could be IPFPID.NLS.

Ensure that your IPFxxx.NLS file is located in the following directory:

\TOOLKIT\IPFC