Star Micronics SG-10 User Manual page 60

You may wonder why they picked l/72 of an inch as the in-
crement for the line spacing command. There's a good reason:
the dots that the printer makes are l/72 inch apart. So this means
that you can vary the line spacing in increments as tine as one
dot-unless you want finer spacing, like one half dot spacing
(STAR mode) or one third dot spacing (IBM mode).
The < ESC > "3" CHR$( it command sets the line spacing in )
increments of l/144 inch (STARmode) or l/216 inch (IMB mode).
Change line 30 in your program so it is like this:
30 LPRINT CHR$ (27) "3" CHR$(I) ;
and run the program again. Now the results will look like this:
(STAR mode)
This
This
This
This
This
This
This
Line
line spacing
is set to 20
line spacing is set to '211
line spacing is set tc! 22
line spacing is set to 2;5
line spacing is set to 24
line spacing is set to 25
E.pacing is set to l/6
inch
!nomal ) .
(IBM mode)
This line
This line
s'pac 5
Line spaci
spaq
1
ng ic
i
get to l/6
inch
(nomal).
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-
-
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