phoffman at imc.org
Sat Apr 4 18:05:48 CEST 2009
At 11:17 PM -0400 4/3/09, John C Klensin wrote:
> "An M-label is a string that becomes a U-label after
> mapping but it not, itself, a U-label. In more recent
> terminology, if a U-label is a canonical form, the
> M-label is a non-canonical form of the same thing. The
> categories of M-label and U-label are disjoint."
> (Patrik and others)
> "An M-label is a string that can be mapped into a
> [valid] U-label. It may be a U-label, since those
> trivially map into themselves. The category of U-label
> is a proper subset of the category of M-label." (Mark
> and others).
I prefer the second one.
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