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Table 6-9
Vertical tab commands
Function
Control code
Advance paper to next tab position
CHR$(ll)
Set vertical tabs at nl, n.2, etc.
(ESC)“B”CHR$(nl)
CHR$(nZ).....CHR$(O)
Set vertical tabs every n lines
One-time vertical tab
(ESC) “e” 1 CHR$(n)
(ESC) “f’ 1 CHR$(n)
W Vertical tab channels
Vertical tab channels are especially helpful in two situations.
The first occurs when you are writing a program to accompany
a preprinted form that can accommodate various types of
responces. The second occurs when you create a multipage
form or report with different vertical tabs on each page.
Table 6-10
Vertical tab channel commands
Function
Control code
Set vertical tabs at nl, ~2, etc.
(ESC)“b”CHR$(nO) CHR$(nl)
as channel nO
CHR$(nZ).....CHR$(O)
Select vertical channel nO
(ESC)“I”CHR$(nO)
You can store up to eight channels of tab stops. They are
numbered from 0 to 7. If you have already stored a set using
(ESC)“B” command, your printer has labelled it as channel 0.
Try this program how to see the vertical tab channels work.
’ Demo of vertical tab channels
;: LPRINT CHR$(27);“b”;CHR$(1);CHR$(lO);CHR$(2O):
CHRS(O);
30 LPRINT CHR$(27);“b”;CHR$(2);CHR$(l5);CHR$(25);
CHRS(O);
40 LPRINT CHR$(27
);“b”;CHR$(3);CHR$(17);CHR$(28);
CHRS(O) ;
50 ’ Use vertical
60 FOR I=1 TO 3
70 LPRI NT “TOP OF
tab channels
FORM”
80 LPRINT CHR$(27);“/“;CHR$(I);
90 LPRINT CHR$(ll);
100 LPRINT “1ST TAB OF CHANNEL”; I
110 LPRINT CHR$(ll);
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