U+0099 "SGC" Latin-1 Supplement Unicode Character

Unicode Version 17.0

SGC

U+0099 "SGC" Latin-1 Supplement is a legacy control code originally defined as the "Single Graphic Character Introducer" within the C1 control character set for 8-bit data transmission, specifically intended in older terminal and communication protocols to signal that the following character should be interpreted as a graphical symbol rather than a control function. It falls within the C1 Controls and Latin-1 Supplement block, where positions U+0080 through U+009F are reserved for control codes, not intended for general public display or text content. In modern contexts, this character is considered obsolete and is typically ignored or treated as a non-printing control character, as it does not represent a visible glyph or letter. Its practical use is largely historical, pertaining to early text transmission standards such as ISO 2022 and ECMA-48, and modern systems often convert or discard it to avoid rendering issues.

General Properties

Code Point U+0099
Version Added 1.1
Block Latin-1 Supplement
General Category Control
Canonical Combining Class Not Reordered
Bidirectional Class Boundary Neutral
Alias SGC (abbreviation)
SINGLE GRAPHIC CHARACTER INTRODUCER (figment)

Encodings

HTML Decimal Encoding ™
HTML Hex Encoding ™
UTF-8 Encoding 0xC2 0x99
UTF-16 Encoding 0x0099
UTF-32 Encoding 0x00000099
C/C++/Java Escape \u0099

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