Genicom GEK 00031B manual Nul

HT	Horizontal Tab: Advances the print position to the next horizontal
	tab stop. If there are no tab stops between the print position and the
	right margin, the HT is ignored. Tab stops are set by the command
	ESC D. Default tabs are set every eight columns, beginning at
	column 9.
	Decimal:	9
	Hex:	09
	BASIC:	CHR$(9);
LF	Line Feed: Advances the paper one line by the current setting for line
	space. If the LF causes paper to exceed the form length, a form feed
	occurs. Acts as a line terminator.
	Decimal:	10
	Hex:	0A
	BASIC:	CHR$(10);
NUL	Null: NUL is ignored by the printer when received by itself. If received
	as part of a graphics data sequence, it is interpreted as a graphics
	space. Null is used by some escape sequences to end a series of
	parameters. When used as a parameter of a sequence looking for an
	even or odd value, it is considered even. Example: ESC S NULL
	causes superscripting to occur.
	Decimal:	0
	Hex:	00
	BASIC:	CHR$(O);
SI	Shift In: SI causes condensed printing. It sets the printer to 17.1 cpi
	(8.55 cpi if double-wide printing is enabled). Condensed printing
	remains in effect for subsequent lines until cancelled.
	Decimal:	15
	Hex:	0F
	BASIC:	CHR$(15);
SO	Shift Out: SO causes double-wide printing for the current line only.
	Decimal:	14
	Hex:	0E
	BASIC:	CHR$(14);
VT	Vertical Tab: VT advances the paper to the next vertical tab setting
	and returns the print position to the left margin. A maximum of 64
	vertical tabs is allowed per form. The vertical tabs are set using ESC
	B. The paper is advanced one line if no tab is set beyond the current
	line.
	Decimal:	11
	Hex:	0B
	BASIC:	CHR$(11);

Chapter 5. Proprinter Emulation 110 GEK-00029B