This program should print “PAY TO THE ORDER OF:” twice, and they should be 7 inches apart. Line 20 sets the form length to 7 inches. After line 30 prints, line 40 sends a form feed advance the paper to the top of the next form. Line 50 then prints its message.
After you have run this program, turn off the printer and ad- just the top of form position. When you turn the printer back on the page length will reset to its normal setting (usually 11 inches).
BOTTOM MARGIN
Many programs that you use a printer don’t keep track of where they are printing on the page. This causes a problem when you get to the bottom of a page because these programs just keep on printing, right over the perforation. This makes it very hard to read, especially if a line happens to fall right on the perforation. And if you separate the pages then you are really in trouble.
Of course your printer has a solution to this predicament. This printer can keep track of the position on the page, and advance the paper so that you won’t print too near the perforation. There is a command to do this. The control codes to set and cancel are given in the following table.
Table
Bottom margin commands
Function | Control code |
Set bottom margin to n lines | (ESC)“N”CHR$(n) |
Cancel bottom marain | (ESC)“O” |
When you set the bottom margin with (ESC)“N”CHR$(n), the value of n tells the printer how many blank lines should be left at the bottom of the page.
Let’s try a simple application to see how these margins work. Enter this program, which will print 150 lines without bottom margins.
10 ’ Demo | of bottom | margin |
40 LPRINT | CHR.$(12); | ' Form feed |
