IBM 4400 manual Unidirectional Printing, 1 Line, Unidirectional Printing, Set/Reset

Chapter 6 Configuring the Epson FX-1050 Emulation with Control Codes

Underline

ASCII Code ESC – n

Hex Code	1B 2D n
Dec Code	27 45 n
Purpose	Turns automatic underlining on and off.
where:	n = NUL or 0 (hex 00 or hex 30) to turn off underlining
	n = SOH or 1 (hex 01 or hex 31) to turn on underlining
Comment	Spaces are underlined, but graphics and grey scale characters
	are not.
Example	The following sample illustrates underlining.

Unidirectional Printing, 1 Line

ASCII Code ESC <

Hex Code	1B 3C
Dec Code	27 60
Purpose	Causes printing to occur from left to right for one line only.
†Comment	The printer ignores this command.

Unidirectional Printing, Set/Reset

ASCII Code ESC U n

Hex Code	1B 55 n
Dec Code	27 85 n
Purpose	Causes printing to occur in only one direction of shuttle
	movement (left to right).

†Comment The printer ignores this command.

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