UnicodeCharactercom
CSI
U+009B · CONTROL SEQUENCE INTRODUCER

Control Sequence Introducer

  • CodepointU+009B
  • NameCONTROL SEQUENCE INTRODUCER
  • Decimal155
  • BlockLatin-1 Supplement (U+0080–U+00FF)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategoryCc — Control
  • Unicode version1.1 (1993)
  • Bidi classBN — Boundary Neutral
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredNo

About this character

U+009B is CONTROL SEQUENCE INTRODUCER, a control character in the Latin-1 Supplement block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 1.1 (1993).

It is a control code inherited from ISO/IEC 6429 (the C1 control set). Unicode gives control codes no formal name, only the aliases CONTROL SEQUENCE INTRODUCER, CSI.

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Encodings & escapes

UTF-8 encoder →
UTF-8C2 9B2 bytes
UTF-16009B1 code unit
UTF-320000009B4 bytes
CSS\9Bin content: "…"
JavaScript\u009B
JSON\u009B
Python\u009B
Python\N{CONTROL SEQUENCE INTRODUCER}by name
Java / C#\u009B
Rust / Swift / PHP\u{9B}
Go\u009B
Ruby\u009B
Excel / Sheets=UNICHAR(155)
URL-encoded%C2%9Bpercent-encoded UTF-8
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Nearby in Latin-1 Supplement

All in block →
U+0095MWMessage Waiting U+0096SPAStart of Guarded Area U+0097EPAEnd of Guarded Area U+0098SOSStart of String U+0099SGCSingle Graphic Character Introducer U+009ASCISingle Character Introducer U+009CSTString Terminator U+009DOSCOperating System Command U+009EPMPrivacy Message U+009FAPCApplication Program Command U+00A0NBSPNo-Break Space U+00A1¡Inverted Exclamation Mark