The
C0 and C1 control code or
control character sets define control codes for use in text by computer systems that use the
ISO/IEC 2022 system of specifying control and graphic characters. Most
character encodings, in addition to representing printable characters, also have characters such as these that 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.