Punycode & IMA/EAI

[Cary Karp]

> 3. I-label -- A string in Unicode that via proper defined mappings  
> turn (non-reversably) into a U-label
> 
> I.e. when mappings are added to IDNA-2008, I do not want the mapping  
> to extend the set of U-labels, but instead define a new label.

Unless the "I" in I-label is explicitly intended to designate the same
thing that the "I" in IDNA does, we might want to find something that
risks no such confusion. Since we're talking about a pre-processed
U-label, why not <joke>PU-label</joke>?

/Cary