Step 1: Determine the UTF-8 encoding bit layout
The character has the Unicode code point U+0015. In UTF-8, it is encoded using 1 byte because its codepoint is in the range of
0x0000to0x007f.
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 thexare the payload bits.UTF-8 Encoding bit layout by codepoint range Codepoint Range Bytes Bit pattern Payload length U+0000 - U+007F 1 0xxxxxxx 7 bits U+0080 - U+07FF 2 110xxxxx 10xxxxxx 11 bits U+0800 - U+FFFF 3 1110xxxx 10xxxxxx 10xxxxxx 16 bits U+10000 - U+10FFFF 4 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 21 bits Step 2: Obtain the payload bits:
Convert the hexadecimal code point U+0015 to binary:
00010101. Those are the payload bits.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:
00010101
<control>·U+0015
Character Information
Code Point
U+0015
HEX
0015
Unicode Plane
Basic Multilingual Plane
Category
Control
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | 15 | 00010101 |
| UTF16 (big Endian) | 00 15 | 00000000 00010101 |
| UTF16 (little Endian) | 15 00 | 00010101 00000000 |
| UTF32 (big Endian) | 00 00 00 15 | 00000000 00000000 00000000 00010101 |
| UTF32 (little Endian) | 15 00 00 00 | 00010101 00000000 00000000 00000000 |
HTML Entity

URI Encoded
%15
Description
The character U+0015 (codepoint 0015, char: , code: 21) is a control character in the Unicode Standard, categorized under General Category Cc and BidiClass BN. It holds significance primarily within specialized contexts, such as IBM mainframe computers, where it's used to represent the "Start of Header" in the Extended Binary Coded Decimal Interchange Code (EBCDIC) format. Although this character does not have a wide relevance in modern text processing systems, its importance lies in maintaining compatibility with EBCDIC-based systems. The Basic Latin Unicode block, which includes U+0015 and other essential characters, is the foundation of the Unicode system, accommodating various common characters needed for communication across multiple platforms and devices.
How to type the symbol on Windows
Hold Alt and type 0021 on the numpad. Or use Character Map.