U+0091 "PU1" PRIVATE USE ONE Unicode Character

U+0091 "PU1" PRIVATE USE ONE is a control code allocated within the C1 control character set, specifically defined for private or application-specific purposes rather than representing a visible glyph. Originally part of the ISO 8859 and related standards, it belongs to the category of "Private Use" characters, meaning its interpretation and display are not universally standardized but instead depend on the agreement of individual software, systems, or custom font implementations. As such, it typically functions as a command or placeholder in specialized contexts, such as terminal control sequences or proprietary data encoding, and is not intended for ordinary text communication or public exchange.

General Properties

Code Point	U+0091
Version Added	1.1
Unicode 1.0 Name	Private Use One
Block	Latin-1 Supplement
General Category	Control
Canonical Combining Class	Not Reordered
Bidirectional Class	Boundary Neutral
Alias	PRIVATE USE ONE (control) PRIVATE USE-1 (control) PU1 (abbreviation)

Encodings

HTML Decimal Encoding	‘
HTML Hex Encoding	‘
UTF-8 Encoding	0xC2 0x91
UTF-16 Encoding	0x0091
UTF-32 Encoding	0x00000091
C/C++/Java Escape	\u0091

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	Combining Mark
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Vertical Orientation	Rotated
Grapheme Cluster Break	Control
Word Break	Other
Sentence Break	Other