U+FC10 "ﰐ" Arabic Ligature Teh with Yeh Isolated Form Unicode Character

U+FC10 "ﰐ" Arabic Ligature Teh with Yeh Isolated Form is a typographic ligature found in the Arabic Presentation Forms-A block, representing the isolated form of the combined letters "teh" (ت) and "yeh" (ي). This character is not intended for general text interchange but rather for compatibility with legacy Arabic text rendering systems that require specific glyph forms for two-letter combinations. It visually joins a "teh" to a following "yeh," often used in contexts like Arabic calligraphy or older font standards where such precomposed forms simplify layout. Modern Unicode practice recommends using the individual characters with standard shaping algorithms instead of this specialized ligature.

General Properties

Code Point	U+FC10
Version Added	1.1
Name	Arabic Ligature Teh with Yeh Isolated Form
Block	Arabic Presentation Forms-A
General Category	Other Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Arabic Letter
Decomposition Type	Isolated
Decomposition Mapping	"ت" U+062A Arabic Letter Teh "ي" U+064A Arabic Letter Yeh

Encodings

HTML Decimal Encoding	ﰐ
HTML Hex Encoding	ﰐ
UTF-8 Encoding	0xEF 0xB0 0x90
UTF-16 Encoding	0xFC10
UTF-32 Encoding	0x0000FC10
C/C++/Java Escape	\ufc10

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Changes When NFKC Casefolded	Yes
NFKC Casefold	"ت" U+062A Arabic Letter Teh "ي" U+064A Arabic Letter Yeh
NFKC Simple Casefold	"ت" U+062A Arabic Letter Teh "ي" U+064A Arabic Letter Yeh
Script	Arabic
Script Extensions	Arabic
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	OLetter