From: [george] How to specify manufacturer tag on items
Typing an UNID is to say you pronounce it uh-nid. I always just spell it out U-N-I-D which would be a UNID. Since I've never heard anyone else say it out loud this has never come up yet.Yes, it should work with any top-level design type (basically, anything with an UNID).
Note: For those who don't know you put "a" in front of a word that has a consonant sound and "an" in front of a vowel sound. The letter doesn't matter.