FOR ARCHIVING: Registration form for 'blk' --- 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: blk Description: Pa'o Karen Description: Pa'O 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 639-3 effective 2012-02-03, adding the additional name "Pa'O" for the existing code element 'blk'. This change is not documented in the ISO 639-3 2011 series change requests report, nor in the official documentation for ISO 639 identifier 'blk'.