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65
Table 5-l
Line feed commands
Function
Control code
Return print head to left margin
CHR$(lS)
Advance paper one line
CHR$( 10)
Reverse paper one line
(ESC) CHR!$(lO)
Adds (LF) to every (CR)
(ESC) "5" 1 (IBM-P mode only)
Restore normal function of (CR) (ESC) "5" 0 (IBM-P mode only)
n Changing the line spacing
When you turn your printer on, the line spacing is set to 6
lines per inch (or 8 lines per inch if DIP switch 2-8 is off). This is
fine for most
printing
applications,
but
when
you want
something
different,
the printer makes it easy to set the line
spacing to whatever you want.
Try this program to see how easy it is to change the line spac-
ing:
NEW
10 ' Demo of line
spacing
20 FOR I=1 TO 25
30 IF I=13 THEN 60
40 LPRINT CH.R$(27);"A";CHR$(I);
50 LPRINT "THIS LINE SPACING IS SET TO";1
60 NEXT I
70 LPRINT "LINE SPACING IS SET TO l/6 INCH (NORMAL)."
80 LPRINT CHR$(27);"2"
90 END
Line 40 changes the line spacing. The command
(ESC) "A"
CHR$(n) changes the line spacing to n/60 of an inch. The loop
that is started in line 20 increases the value of n (the variable I in
this program) each time it is executed.
So the line spacing in-
creases as the program
continues.
Line 30 just shortcuts
the
loop when I = 13, since BASIC won't let us send CHR$(13)
without adding an unwanted
CHR$( 10) to it. Finally, the (ESC)
"2" in line 80 resets the line spacing to 6 lines per inch. This is a
shortcut that is the same as (ESC) "A" CHR$(lO).
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