Tally Genicom Matrix Printer - Manual (Page 262)

Set Line Spacing (SLS) CSI ... SP h
Data Structure ASCII CSI n SP "h" [A] set line spacing
hex. 9B n 20 68
dec. 155 n 32 104
Description n specifies the line spacing
The unit is either decipoints or depends on the SSU selection (Select Size Unit, see page 8).
Note also the sequence SPI (Spacing Increment, see page 15).
26 Line Spacing