Script tags (OpenType 1.4)

Script tags identify the scripts represented in a OpenType Layout font. Script tags are defined by Microsoft Typography and correspond to the contiguous character code ranges in Unicode.

All tags are 4-byte character strings composed of a limited set of ASCII characters in the 0x20-0x7E range. A script tag can consist of four or fewer lowercase letters. If a script tag consists less than four lowercase letters, the letters are followed by the requisite number of spaces (0x20), each consisting of a single byte.

Some of most commonly used script tags are shown below. A full list of script tags is available from Microsoft.

Script	Script Tag
Arabic	arab
Armenian	armn
Bengali	beng
Bopomofo	bopo
Braille	brai
Byzantine Music	byzm
Canadian Syllabics	cans
Cherokee	cher
CJK Ideographic	hani
Cyrillic	cyrl
Default	DFLT
Devanagari	deva
Ethiopic	ethi
Georgian	geor
Greek	grek
Gujarati	gujr
Gurmukhi	guru
Hangul Jamo	jamo
Hangul	hang
Hebrew	hebr
Hiragana	kana
Kannada	knda
Katakana	kana
Khmer	khmr
Lao	lao
Latin	latn
Malayalam	mlym
Mongolian	mong
Myanmar	mymr
Ogham	ogam
Oriya	orya
Runic	runr
Sinhala	sinh
Syriac	syrc
Tamil	taml
Telugu	telu
Thaana	thaa
Thai	thai
Tibetan	tibt
Yi	yi

When the ScriptList table is searched for a script, and no entry is found, and there is an entry for the 'dflt' script, then this entry must be used. Furthermore, the Script table for the 'dflt' script must have a non-NULL DefaultLangSys and a LangSysCount equal to 0; in other words, there is only a default language for the default script.