TerminalSettings.ECHOCTL (gb.term)

Property ECHOCTL As Boolean

Echo control characters.

If ECHO is also set, terminal special characters other than TAB, NL, START, and STOP are echoed as ^X, where X is the character with ASCII code 0x40 greater than the special character.

For example, character 0x08 (BS) is echoed as ^H.

Not in POSIX.