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H Vertical tab channels
Vertical tab channels are especially hefpful in two situations.
The first occurs when you are writing a program to accompany
a preprinted
form that can accommodate
verious
types
of
responses.
The second occurs when you create a multipage
form or report with different vertical tabs on each page.
Table 5- 11
Vertical tab channel commands
Function
Control code
Set vertical tabs at nl, n.2, etc. as (ESC)
"b" CHR$(nO) CHR$(nl)
channel nO
CHR$(nZ) . . . . . CHR$(O)
Select vertical channel nO
(ESC)
"/" CHR$(nO)
You can store up to eight channels
of tab stops. They are
numbered
from 0 to 7. If you have already stored a set using
(ESC) "B"
command,
your printer has labelled
it as channel
0.
Try this program how to see the vertical tab channels work.
10
' Demo of
vertical
tab
channels
20 LPRINT cHR$(27);"b";CHR$(1);CHR$(lO);CHR$(2O);
30 LPRINT CHR$(27);"b";CHR$(2);CHR$(l5);CHR$(25);
CHR$(O);
40 LPRINT CHR$(27);"b";CHR$(3);CHR$(l7);CHR$(28);
CHRS(O);
50
' Use vertical
tab
channels
60 FOR I=1
TO 3
70 LPRINT
"TOP OF FORM"
80 LPRINT CHR$(27);"/";CHR$(I);
90 LPRINT CHR$(ll);
100 LPRINT
"1ST
TAB OF CHANNEL";1
110 LPRINT CHR$(ll);
120 LPRINT "2ND TAB OF CHANNEL";1
130 LPRINT CHRS(12);
140 NEXT I
150 LPRINT CHR$(27);"@"
160 END
When you run this program the printout should look like this.
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