Michael Sweet Dec 4, 2025

From the December 4, 2025 IPP workgroup conference call:

The general form of "om_SOURCE-NAME_WIDTHxLENGTHmm" and "oe_SOURCE-NAME_WIDTHxLENGTHin" can be used for any size from a source other than the existing prefixes (iso, na, prc, jpn, jis, etc.), where the "SOURCE" string is either the standard organization acronym or a 2 or 3 letter ISO country code.

That said, there was not interest in registering size names for historical media that is not in common usage.  If you feel these sizes *are* common enough, please provide a list based on the above guidance and we'll get the registration going.