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48
SETTING LEFT AND RIGHT MARGINS
The left and right margins
of this printer work just like a
typewriter
-
once they are set all printing
is done between
them. You can set margins
by escape commands.
The com-
mands to set the margins are given in the following table:
Table 4-6
Left and right margin
commands
Try setting the margins with this program:
10 ' Demo of margins
20 GOSUB 70
30 LPRINT CHR$(27);"1";CHR$(lO);
40 LPRINT CHR$(27);"Q";CHR$(70);
50 GOSUB 70
60 END
70 FOR I=1 TO 80
80 LPRINT "X";
90 NEXT I
100 LPRINT
110 RETURN
The
first thing that this program
does is to branch to the
subroutine that starts in line 70. This subroutine
prints 80 X's in
a row. The first time that the subroutine is used, all the X's fit in
one line. Then line 30 sets the left margin to 10, and line 40 sets
the right margin to 70. Once again the subroutine
is used, but
this time the X's won't all fit on one line since there is now only
room for 60 characters
between the margins.
Run the program.
The results will look like this:
XXXXXXXXXxkXXXXxXXxXxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxkkkk~xkxxxxxxxxxxkxxxxx
XkXXXXXxXXXXXXXXXXXXxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxkxxxxxxx
xxxxxxxxxxxxxxxxxxxx
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