1. In alphabet coding schemes, a specially designated character , the occurrence of which in the data signifies that one or more of the characters to follow are from a different character code , i.e., have meanings other than normal. 2. In a text-control sequence of characters, a control character that indicates the beginning of the sequence and the end of any preceding text.
ESCAPE CHARACTER (ESC)
Meaning of ESCAPE CHARACTER (ESC) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012