C0 and C1 control codes

<p>The C0 and C1 control code or <a href="/facts/Control_character/jkWgHvfC">control character</a> sets define control codes for use in text by computer systems that use <a href="/facts/ASCII/vGUI33Qu">ASCII</a> and derivatives of ASCII. The codes represent additional information about the text, such as the position of a cursor, an instruction to start a new line, or a message that the text has been received.
</p><p>C0 codes are the range 00<a href="/facts/Hexadecimal/02ohQW22">HEX</a>–1FHEX and the default C0 set was originally defined in <a href="/facts/ISO_646/7CdXUnTs">ISO 646</a> (<a href="/facts/ASCII/vGUI33Qu">ASCII</a>). C1 codes are the range 80HEX–9FHEX and the default C1 set was originally defined in <a href="/facts/ECMA-48/29l9Yalv">ECMA-48</a> (harmonized later with ISO 6429). The <a href="/facts/ISO%2fIEC_2022/3vbwU2Bx">ISO/IEC 2022</a> system of specifying control and graphic characters allows other C0 and C1 sets to be available for specialized applications, but they are rarely used.
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C0 and C1 control codes open-in-new

C0 and C1 control codes