FOR ARCHIVING: Registration form for 'os' --- LANGUAGE SUBTAG REGISTRATION FORM 1. Name of requester: Doug Ewell 2. E-mail address of requester: doug at ewellic.org 3. Record Requested: Type: language Subtag: os Description: Iron Ossetic Description: Iron Description: Iron Ossetian Description: Ossetian Description: Ossetic 4. Intended meaning of the subtag: 5. Reference to published description of the language (book or article): 6. Any other relevant information: This registration tracks a change made to ISO 639 effective 2025-10-15, changing the reference name for [oss] (which is represented by ISO 639 Set 1 [os] in the Language Subtag Registry) to "Iron Ossetic", adding the additional names "Iron" and "Iron Ossetian", and retaining the additional names "Ossetian" and "Ossetic". For more information on the ISO 639 change, refer to: https://iso639-3.sil.org/sites/iso639-3/files/reports/Issue%2006%20October%202025%20ISO%20639%20MA%20Newsletter.pdf https://iso639-3.sil.org/request/2025-015 https://iso639-3.sil.org/code/oss