RUB. When the RUB (rubout) key is typed while holding down the SHIFT key, a non-displayable rubout code (ASCII DEL) is transmitted to the computer. The cursor i

RUB. When the RUB (rubout) key is typed while holding down the SHIFT key, a non-displayable rubout code (ASCII DEL) is transmitted to the computer. The cursor is not advanced and the character code stored in display memory is not overwritten. RUB is normally used to tell the computer that a previous character should be deleted. https://amaus.net/static/S100/learSiegler/terminal/Lear%20Siegler%20ADM3A%20operators%20manual.pdf https://amaus.net/static/S100/learSiegler/terminal/Lear%20Si...