UnicodeCharactercom
SOH
U+0001 · START OF HEADING

Start of Heading

  • CodepointU+0001
  • NameSTART OF HEADING
  • Decimal1
  • 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+0001 is START OF HEADING, 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 START OF HEADING, SOH.

Its visible stand-in is U+2401 ␁ in the Control Pictures block.

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Encodings & escapes

UTF-8 encoder →
UTF-8011 byte
UTF-1600011 code unit
UTF-32000000014 bytes
CSS\1in content: "…"
JavaScript\u0001
JSON\u0001
Python\u0001
Python\N{START OF HEADING}by name
Java / C#\u0001
Rust / Swift / PHP\u{1}
Go\u0001
Ruby\u0001
URL-encoded%01percent-encoded UTF-8
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Nearby in Basic Latin

All in block →
U+0000NULNull U+0002STXStart of Text U+0003ETXEnd of Text U+0004EOTEnd of Transmission U+0005ENQEnquiry U+0006ACKAcknowledge U+0007BELAlert