LOW LINE·U+005F

_

Character Information

Code Point
U+005F
HEX
005F
Unicode Plane
Basic Multilingual Plane
Category
Connector Punctuation

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
5F
01011111
UTF16 (big Endian)
00 5F
00000000 01011111
UTF16 (little Endian)
5F 00
01011111 00000000
UTF32 (big Endian)
00 00 00 5F
00000000 00000000 00000000 01011111
UTF32 (little Endian)
5F 00 00 00
01011111 00000000 00000000 00000000
HTML Entity
_
URI Encoded
_

Description

The Unicode character U+005F, known as the LOW LINE or underscore (_), is a fundamental element in digital text formatting. Primarily used for separating lines of code or demarcating divisions between sections within programming and markup languages, this unobtrusive horizontal line serves a crucial technical purpose, ensuring clarity and readability in textual content. Notably, it does not belong to any specific cultural or linguistic context; instead, its role is critical in digital communication, particularly where precision and exact formatting are vital. The underscore character is part of the Basic Latin Unicode block (U+0000 to U+007F), which serves as the foundational component of the Unicode system, encompassing essential characters for a wide range of applications across multiple platforms and devices. Despite its origins in the ASCII character set, the Basic Latin Unicode block has evolved to accommodate modern needs, remaining an integral part of digital communication today.

How to type the _ symbol on Windows

Hold Alt and type 0095 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character _ has the Unicode code point U+005F. In UTF-8, it is encoded using 1 byte because its codepoint is in the range of 0x0000 to 0x007f.

    Therefore we know that the UTF-8 encoding will be done over 7 bits within the final 8 bits and that it will have the format: 0xxxxxxx
    Where the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+005F to binary: 01011111. Those are the payload bits.

  3. Step 3: Fill in the bits to match the bit pattern:

    Obtain the final bytes by arranging the paylod bits to match the bit layout:
    01011111