U+FD00 "ﴀ" Arabic Ligature Hah with Yeh Isolated Form Unicode Character

U+FD00 "ﴀ" Arabic Ligature Hah with Yeh Isolated Form is a typographic ligature found in the Arabic script block, representing the combined graphical form of the letter Hah (ه) followed by Yeh (ي) when they appear in an isolated position within a word. This character is part of the Arabic Presentation Forms-A range, which encodes specialized cursive variants and ligatures used in calligraphic and display contexts, particularly for traditional Persian, Urdu, and Arabic texts where such connections enhance visual fluency. It serves to preserve the distinct shape of the isolated initial sequence, ensuring accurate rendering in systems that support complex text layout for right-to-left scripts.

General Properties

Code Point	U+FD00
Version Added	1.1
Name	Arabic Ligature Hah 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	"ح" U+062D Arabic Letter Hah "ي" U+064A Arabic Letter Yeh

Encodings

HTML Decimal Encoding	ﴀ
HTML Hex Encoding	ﴀ
UTF-8 Encoding	0xEF 0xB4 0x80
UTF-16 Encoding	0xFD00
UTF-32 Encoding	0x0000FD00
C/C++/Java Escape	\ufd00

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	"ح" U+062D Arabic Letter Hah "ي" U+064A Arabic Letter Yeh
NFKC Simple Casefold	"ح" U+062D Arabic Letter Hah "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