🚀 go-pugleaf

In article <1993Jan22.122553.4823W@lumina.edb.tih.no> ketil@edb.tih.no (Ketil Albertsen,TIH) writes:
>10646/1 is supposedly a 32-bit identification scheme intended to
>cover just about any printable symbol in the world, while 10646/2, or Unicode,
>is a subset using 16 bit codes for text symbols (characters or Asian-
>style symbols).

ISO/IEC 10646-1:1993 (to be published in the first or second quarter this
year) defines one repertoire of characters and two encoding forms
The encoding forms are called UCS4 (Universal Character Set 4-Octet)
and UCS2 (Universal Character Set 2-Octet), the former interpreted as 32-bit
unsigned integers, the latter as 16-bit unsigned integers.  The UCS2 encoding
form is related to the UCS4 encoding form by zero extension; that is, by
zero extending the 16-bit form to 32 bits, the equivalent UCS4 encoding form
is created.

No characters are currently assigned to codepoints (bit combinations) outside
of UCS2 (also called the Basic Multilingual Plane or BMP for short).  Out
of the 65,536 distinct bit combinations in UCS2, 34,168 are assigned to
characters, 6,467 are reserved, and 24,901 are available for future assignment.

The UCS2 encoding space is divided into sections, whose contents are
characterized below:

A-Zone (Alphabetic)	(11,892 assigned, 65 reserved, 8,011 available)

  Alphabets
  Hangul Jamo Alphabet
  Latin & Greek Precombined Forms
  Symbols
  CJK Auxiliaries
  Hangul Precombined Syllable Forms

I-Zone (Ideographic)	(20,902 assigned, 0 reserved, 90 available)

  CJK Unified Ideographs

O-Zone (Open)		(0 assigned, 0 reserved, 16,384 available)

  Unassigned

R-Zone (Restricted)	(1,374 assigned, 6402 reserved, 416 available)

  Private Use Area
  CJK Ideograph Compatibility
  Presentation Compatibility
  Other Compatibility & Specials

Glenn Adams