Tally Genicom Matrix Printer manual CSI ... p, Data Sructure

Horizontal Motion Index (HMI)					CSI ... p
Data Sructure	ASCII	CSI	n	"p"	[C] set HMI
	hex.	9B	n	70
	dec.	155	n	112
Description	n = 0...20

The normal character density is enlarged by n ∗1⁄120 inch. If n is set to zero (default setting), HMI is disabled.

Example	10 REM		horizontal motion index
	20	LPRINT	"this is normal width"
	30	LPRINT	CHR$(27);"[3p";
	40	LPRINT	"now 3/120 inch is added to normal width"
	50	LPRINT	CHR$(27);"[6p";
	60	LPRINT	"now 6/120 inch is added to normal width"
	70	END

22Character Spacing