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■ Form feed
The simplest forms control code is the@wz feed. Form feed
(or (FF)) is CHR$(12) and causes the printer to move the paper
to the top of the next sheet. Try it by changing lines 40 and 50 to
this:
40 ‘
form feed
50 LPRINT (;HR$(Iz);
Before you run the program, turn your printer off and adjust
the paper so that the top of the sheet is even with the top of the
ribbon guide on the print head, then turn the printer back on. If
you don’t remember how to do this, review Chapter 2. When
you run the program, the results will look like this:
w
.——
0
———
—
——
—
—
.—.——
1...I NE NUMHER ‘1..
L INE NIJI”’IBER2.
(-) I
—
——
L – – . – – – – – – ––
~L INE NUMBER 3.
n
The form feed (CHR$(12)) in line 50 caused the printer to
move to the top of a new page before printing the last two lines.
❑ Reverse form feed
Just as your printer can perform a reverse line feed, it can do a
reverse form feed. This code moves the paper so that the print-
head is positioned at the top of the current page. This can be
used, for example, to print text in a multi-column magazine for-
mat; print the first column, then reverse form feed back to the
top of the page to start the second column. The code for reverse
form feed is easy to remember: (ESC) (FF).