UnicodeCharactercom
SYN
U+0016 · SYNCHRONOUS IDLE

Synchronous Idle

  • CodepointU+0016
  • NameSYNCHRONOUS IDLE
  • Decimal22
  • BlockBasic Latin (U+0000–U+007F)
  • 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+0016 is SYNCHRONOUS IDLE, a control character in the Basic Latin 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 ASCII. Unicode gives control codes no formal name, only the aliases SYNCHRONOUS IDLE, SYN.

Its visible stand-in is U+2416 ␖ in the Control Pictures block.

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Encodings & escapes

UTF-8 encoder →
UTF-8161 byte
UTF-1600161 code unit
UTF-32000000164 bytes
CSS\16in content: "…"
JavaScript\u0016
JSON\u0016
Python\u0016
Python\N{SYNCHRONOUS IDLE}by name
Java / C#\u0016
Rust / Swift / PHP\u{16}
Go\u0016
Ruby\u0016
URL-encoded%16percent-encoded UTF-8
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Nearby in Basic Latin

All in block →
U+0010DLEData Link Escape U+0011DC1Device Control One U+0012DC2Device Control Two U+0013DC3Device Control Three U+0014DC4Device Control Four U+0015NAKNegative Acknowledge U+0017ETBEnd of Transmission Block U+0018CANCancel U+0019EOMEnd of Medium U+001ASUBSubstitute U+001BESCEscape U+001CFSInformation Separator Four