User`s manual

8–12 IBM Proprinter Emulation
Backspace
ASCII Code BS
Hex Code 08
Dec Code 08
Purpose Moves the logical print head left one character space toward the first
character column.
Discussion This code locks the current data in the string buffer, which allows certain
control codes to emulate immediate printing of the buffer. CAN clears
data in the buffer that should be printed. This code is ignored if the
logical print head is positioned at the first character column. When the
backspace code is received, printing speed will be reduced.
If the printer is in double width mode, the backspace code moves the print
head left two normal character spaces.
Example Print and backspace two character positions.
Bell
ASCII Code BEL
Hex Code 07
Dec Code 07
Purpose Sounds a buzzer/beeper.
Discussion The BEL function will sound one beep upon receipt of this command.