Re: Names of planes, and request for sneak preview

From: John H. Jenkins (
Date: Tue Jul 11 2000 - 12:03:54 EDT

At 7:19 AM -0800 7/11/00, Mark Davis wrote:
>However, there are certain units or thresholds that are useful to distinguish
>in Unicode. The most important threshold is the one between FFFF and 10000:
>important for UTF-16 implementations (and to a minor degree, UTF-8
>implementations). So there are terms for codepoints above and below that. I've
>heard the following used:
>BMP characters: those with codepoints < 10000 (borrowing BMP from 10646)
>aka UCS-2 characters
>aka non-surrogate characters
>non-BMP characters: those with codepoints > FFFF
>aka non-UCS-2 characters
>aka surrogate characters

At the same time, it would be nice to have a Unicodally correct way
of referring to planes 1 and 2, since there is an important boundary
between them.

And of course, the *proper* way to refer to plane 14 is to pretend it
doesn't exist at all. :-)

John H. Jenkins

This archive was generated by hypermail 2.1.2 : Tue Jul 10 2001 - 17:21:05 EDT