| Subject | English | Portuguese |
| comp., MS, Braz. | control escape sequence | sequência de escape de controle (In regular expressions, a backslash followed by the letter "c" followed by one of the letters "a" through "z" or "A" through 'Z'. It matches the ASCII control character that is named by that letter) |
| comp., MS, Braz. | escape sequence | sequência de escape (A character combination consisting of an escape character, usually a backslash, followed by a letter or by a combination of digits) |
| comp., MS, Braz. | hexadecimal escape sequence | sequência de escape hexadecimal (In regular expressions, a backslash followed by the letter "x" followed by a sequence of hexadecimal digits. It matches a character in the target sequence that has the value that is specified by the two digits) |
| comp., MS, Braz. | octal escape sequence | sequência de escape octal (In regular expressions, a backslash followed by one, two, or three octal digits (0-7). It matches a character in the target sequence that has the value that is specified by those digits) |
| comp., MS, Braz. | unicode escape sequence | sequência de escape unicode (In regular expressions, a backslash followed by the letter "u" followed by four hexadecimal digits. It matches a character in the target sequence that has the value that is specified by the four digits) |