U+FDD9 "﷙" Arabic Presentation Forms-A Unicode Character

U+FDD9 "﷙" Arabic Presentation Forms-A is a non-typographic code point that serves as a formatting control character, specifically an "Arabic Ligature Not a Letter for Use in the Sign of the Stop" as designated in the Unicode standard. It is part of the "Arabic Presentation Forms-A" block, which contains characters intended for historical, calligraphic, or specialized text display, rather than for ordinary textual content. This particular code point is not a real letter or word and is generally not used in standard Arabic writing; it exists primarily for compatibility with legacy encodings or for advanced typographic shaping contexts where a stop sign or placeholder is needed without representing actual linguistic content.

General Properties

Code Point	U+FDD9
Version Added	3.1
Block	Arabic Presentation Forms-A
General Category	Unassigned
Canonical Combining Class	Not Reordered
Bidirectional Class	Boundary Neutral

Encodings

HTML Decimal Encoding	
HTML Hex Encoding	
UTF-8 Encoding	0xEF 0xB7 0x99
UTF-16 Encoding	0xFDD9
UTF-32 Encoding	0x0000FDD9
C/C++/Java Escape	\ufdd9

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Unknown
Script	Unknown
Script Extensions	Unknown
Indic Syllabic Category	Other
Vertical Orientation	Rotated
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other
Noncharacter Code Point	Yes