Lucent Technologies AT&T 7400B - Manual (Page 71)

APPENDIX B: S-REGISTERS DEFINITY Communications System
7400B Data Module
Page B-6 User’s Guide
Register: S4
Description: This S-register holds the ASCII value for the line feed character.
Range of Value may be 000 through 127; factory default setting is 010, usually
Values: output by the Ctrl-J key combination from a display terminal.
Storable: no
Comments: none
See Also: Chapter 4, “Operation and Configuration.”
Register: S5
Description: This S-register holds the ASCII value for the backspace character.
Range of Value may be 000 through 032 and 127; factory-default value is 008,
Values: usually output by the Backspace key of a data terminal.
Storable: no
Comments: The operation of the backspace character is to move the cursor left one
character space and (on a command line) erase the character moved to.
If command echo is enabled (AT command E1), the output of the
backspace character is actually three characters: backspace, space,
backspace.
See Also: Chapter 4, "Operation and Configuration."
Register: S6 — not used