Doug Ewell said:
> The supplementary planes
> have existed since 1993,
Not quite right. Technically, the approval and publication of Amendment
1 (UTF-16) to 10646:1993 took place in 1996. The formal proposal which
turned into Amendment 1 was submitted by Mark Davis to WG2 in February,
1994. It is true that the *concept* of the supplementary planes
(although not termed as such then) does date from 1993.
> and the designation of private-use code points
> in Planes 15 and 16 has existed since the release of Unicode 2.0 in
> 1996. That's six years ago.
Correct. That was timed to coincide with the publication of Amendment
1 to 10646, among other things. But it was Amendment 1 that actually
designated Planes 15 and 16 as private-use. The Unicode 2.0 documentation
merely echoes that specification -- it did not create it.
--Ken
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