Script tags (OpenType 1.7)

Script tags generally correspond to a Unicode script. However, the associations between them may not always be one-to-one, and the OFF/OT tags are not guaranteed to be the same as Unicode Script property-value aliases or ISO 15924 script IDs. Since the development of OFF/OT script tags predates the ISO 15924 or Unicode Script property, the rules for script tags defined in this document may not always be the same as rules for ISO 15924 script IDs. The OFF/OT script tags can also correlate with a particular OFF/OT layout implementation, with the result that more than one script tag may be registered for a given Unicode script (e.g. 'deva' and 'dev2').

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.

Script	Script Tag
Arabic	arab
Armenian	armn
Avestan	avst
Balinese	bali
Bamum	bamu
Batak	batk
Bengali	beng
Bengali v.2	bng2
Bopomofo	bopo
Braille	brai
Brahmi	brah
Buginese	bugi
Buhid	buhd
Byzantine Music	byzm
Canadian Syllabics	cans
Carian	cari
Chakma	cakm
Cham	cham
Cherokee	cher
CJK Ideographic	hani
Coptic	copt
Cypriot Syllabary	cprt
Cyrillic	cyrl
Default	DFLT
Deseret	dsrt
Devanagari	deva
Devanagari v.2	dev2
Egyptian heiroglyphs	egyp
Ethiopic	ethi
Georgian	geor
Glagolitic	glag
Gothic	goth
Greek	grek
Gujarati	gujr
Gujarati v.2	gjr2
Gurmukhi	guru
Gurmukhi v.2	gur2
Hangul	hang
Hangul Jamo	jamo
Hanunoo	hano
Hebrew	hebr
Hiragana	kana
Imperial Aramaic	armi
Inscriptional Pahlavi	phli
Inscriptional Parthian	prti
Javanese	java
Kaithi	kthi
Kannada	knda
Kannada v.2	knd2
Katakana	kana
Kayah Li	kali
Kharosthi	khar
Khmer	khmr
Lao	lao
Latin	latn
Lepcha	lepc
Limbu	limb
Linear B	linb
Lisu (Fraser)	lisu
Lycian	lyci
Lydian	lydi
Malayalam	mlym
Malayalam v.2	mlm2
Mandaic, Mandaean	mand
Mathematical Alphanumeric Symbols	math
Meitei Mayek (Meithei, Meetei)	mtei
Meroitic Cursive	merc
Meroitic Hieroglyphs	mero
Miao	plrd
Mongolian	mong
Musical Symbols	musc
Myanmar	mymr
Myanmar v.2	mym2
New Tai Lue	talu
N’Ko	nko
Ogham	ogam
Ol Chiki	olck
Old Italic	ital
Old Persian Cuneiform	xpeo
Old South Arabian	sarb
Old Turkic, Orkhon Runic	orkh
Odia (formerly Oriya)	orya
Odia v.2 (formerly Oriya v.2)	ory2
Osmanya	osma
Phags-pa	phag
Phoenician	phnx
Rejang	rjng
Runic	runr
Samaritan	samr
Saurashtra	saur
Sharada	shrd
Shavian	shaw
Sinhala	sinh
Sora Sompeng	sora
Sumero-Akkadian Cuneiform	xsux
Sundanese	sund
Syloti Nagri	sylo
Syriac	syrc
Tagalog	tglg
Tagbanwa	tagb
Tai Le	tale
Tai Tham (Lanna)	lana
Tai Viet	tavt
Takri	takr
Tamil	taml
Tamil v.2	tml2
Telugu	telu
Telugu v.2	tel2
Thaana	thaa
Thai	thai
Tibetan	tibt
Tifinagh	tfng
Ugaritic Cuneiform	ugar
Vai	vai
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.