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The meaning of a line (sometimes called a “row”) is defined by the t’ertical
motim?index (VMI). The printer moves the print position down a line when
it gets a Line Feed code, usually when it bumps into the right margin.
You’ll probably let your computer program set the line depth. But from the
panelyoucan.setthe VMI valueinincrementsfrom 1/48to 255/48ofan inch.
Auto’parameters
The print position refers to the point on the page where the next character
will be printed. When the printer reaches the end of a line, the Auto
Parameters settings tell it whether or not to automatically:
. move the print position down one line (Iinefeeci),
. or keep text out of the side margin (auto wrap).
2.3.4 Moving the print position: a preview
With dot-matrix printer,youpick where toprinton thepageeither by moving
the printhead back and forth or by moving the paper itself. Laser printers
don’t have printheads, but the principle remains the same: you have to say
exactly where on the page each picture and string of text isto go, soeach page
can be constructed in the printer’s memory.
Instead of talking about printheads we talk about moving the printposifion
(some people call it moving the “cursor”,
using the computer-screen anal-
ogy). Horizontally, you can move the print position with backspace and
carriage<return commands. Vertically, you can move the print positiondown
the page by printing so many linesper inch,or by sending line-feed and half
line-feedcommands. Youcan also move to tab settingsbothhorizontally and
vertically (handy for tables and blank forms, or making room for your
diagrams).
But those aren’t all. You can tell the Star LaserPrinter 4111to move the print
position vertically or horizontally in increments of:
1/10, 1/12or similar fractions of an inch (pitch settings),
1/48,or 1/120inch (line or column definitions),
.
1/300 inch (dots), or
1/720 inch (tenths of a point).
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