Tally Genicom Matrix Printer - Manual (Page 260)

Line Spacing
Vertical Spacing (SVS) CSI ... SP L
Data Structure ASCII CSI n SP "L" [A] set vertical spacing (lpi)
hex. 9B n 20 4C
dec. 155 n 32 76
Description For n the following parameters are available:
n hex. dec. vertical spacing
0 30 48 6 lpi
1 31 49 4 lpi
2 32 50 3 lpi
3 33 51 12 lpi
4 34 52 8 lpi
9 39 57 2 lpi
Note that changing the line spacing also changes the number of lines per page.
Changing of line spacing does not affect the form length set before hand.
24 Line Spacing