Epson DLQ-3500 Reference Manual page 71

When auto tear-off is off and you are using continuous paper with
the tractor, you need to move the perforation to the tear-off
position manually by pressing the Tear Off/Special Paper
button. See "Using the tear-off function" on page 1-14 for more
information.
Auto line feed
When auto line feed is on, the printer accompanies each carriage
return (CR) code received with a line feed (LF) code.
Print direction
You can select auto print direction, bidirectional printing (Bi-D),
or unidirectional printing (Uni-D). Printing is normally
bidirectional; however, unidirectional printing allows for precise
vertical printing alignment.
Software
When you select ESC/P2, the printer operates in the EPSON
ESC/P2 mode. When you select IBM PPDS, the printer emulates
an IBM printer.
0 slash
Select the zero character with a slash (
without a slash (0) (This feature is off). The slash allows you to
easily distinguish between the uppercase letter "O" and a zero.
High speed draft
When high speed draft is on, the printer prints up to 550 cps
(characters per second) at 10 cpi (characters per inch). When it is
off, the printer prints 495 cps at 10 cpi.
) (this feature is on) or
Control Panel
3-9