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GB18030(5)		  FreeBSD File Formats Manual		    GB18030(5)

NAME
     gb18030 --	GB 18030 encoding method for Chinese text

SYNOPSIS
     ENCODING "GB18030"

DESCRIPTION
     The GB18030 encoding implements GB	18030-2000, a PRC national standard
     for the encoding of Chinese characters.  It is a superset of the older
     GB	2312-1980 and GBK encodings, and incorporates Unicode's	Unihan Exten-
     sion A completely.	 It also provides code space for all Unicode 3.0 code
     points.

     Multibyte characters in the GB18030 encoding can be one byte, two bytes,
     or	four bytes long.  There	are a total of over 1.5	million	code posi-
     tions.

     GB	11383-1981 (ASCII) characters are represented by single	bytes in the
     range 0x00	to 0x7F.

     Chinese characters	are represented	as either two bytes or four bytes.
     Characters	that are represented by	two bytes begin	with a byte in the
     range 0x81-0xFE and end with a byte either	in the range 0x40-0x7E or
     0x80-0xFE.

     Characters	that are represented by	four bytes begin with a	byte in	the
     range 0x81-0xFE, have a second byte in the	range 0x30-0x39, a third byte
     in	the range 0x81-0xFE and	a fourth byte in the range 0x30-0x39.

SEE ALSO
     euc(5), gb2312(5),	gbk(5),	utf8(5)

     Chinese National Standard GB 18030-2000: Information Technology --
     Chinese ideograms coded character set for information interchange --
     Extension for the basic set, March	2000.

     The Unicode Standard, Version 3.0,	The Unicode Consortium,	2000.

STANDARDS
     The GB18030 encoding is believed to be compatible with GB 18030-2000.

FreeBSD	9.2			August 10, 2003			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS

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