IBM 4400 manual Esc @, DC1, DC3

Chapter 4 Configuring the Serial Matrix Emulation with Control Codes

FUNCTION	ASCII CODE	PAGE
Print Attributes (Continued)
Overscoring	ESC _ n	103
Print Mode/Pitch Selection	ESC X mn	104
	ESC [ n q
Superscript/Subscript Printing	ESC S n	108
Superscript/Subscript Printing Reset ESC T		108
Underline	ESC – n	109
Graphics
Bit Image Mode, Single Density	ESC K n1 n2	81
Bit Image Mode, Double Density	ESC L n1 n2	82
Bit Image Mode, Double Density
Double Speed	ESC Y n1 n2	82
Bit Image Mode, Quadruple Density	ESC Z n1 n2	83
Other Functions
Bell	BEL	81
Character Set Select	ESC l xyz	86
Characters 80-9F (Control Codes)	ESC 7	88
Characters 80-9F (Printable Symbols)ESC 6		89
Characters 80-9F (Printable Symbols)ESC u		89
Character Set Select: International
Languages	ESC R n	90
Emulation Reset	ESC @	94
Extended Character Set	ESC 4	96
Extended Character Set Cancel	ESC 5	96
Printer Select	DC1	107
Printer Deselect	DC3	107
Super-Set Commands	ESC };	109

Backspace

ASCII Code BS

Hex Code 08

Dec Code 8

Purpose Moves the logical print head to the left one character space toward the first character column.

Comment Moves the character position indicator one character space to the left at the current character pitch setting. The code is ignored if the logical print head is positioned at the first character column.

Example If you were to print five “T” characters, then two BS commands, then two “=” characters, the output would look like the sample below.

80