U+FD10 "ﴐ" Arabic Ligature Dad with Reh Isolated Form Unicode Character

U+FD10 "ﴐ" Arabic Ligature Dad with Reh Isolated Form is a typographic ligature found in the Arabic Presentation Forms-A block, representing a joined or calligraphic rendering of the Arabic letters ḍād (ض) and rāʾ (ر) in their isolated form. This character is used in certain contexts, such as historical manuscripts or decorative text, where two separate letters are combined into a single glyph for stylistic or space-saving purposes. It does not represent a standard semantic unit in modern Arabic script and is primarily intended for backward compatibility or specialized rendering systems, meaning it should not be used as a substitute for the sequential characters in plain text without careful consideration of context.

General Properties

Code Point	U+FD10
Version Added	1.1
Name	Arabic Ligature Dad with Reh 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	"ض" U+0636 Arabic Letter Dad "ر" U+0631 Arabic Letter Reh

Encodings

HTML Decimal Encoding	ﴐ
HTML Hex Encoding	ﴐ
UTF-8 Encoding	0xEF 0xB4 0x90
UTF-16 Encoding	0xFD10
UTF-32 Encoding	0x0000FD10
C/C++/Java Escape	\ufd10

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	"ض" U+0636 Arabic Letter Dad "ر" U+0631 Arabic Letter Reh
NFKC Simple Casefold	"ض" U+0636 Arabic Letter Dad "ر" U+0631 Arabic Letter Reh
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