Printronix L7032 Programmer's Reference Manual page 25

Explicit Positioning Commands
Use the Horizontal Tab command to change the horizontal print position. With
the Horizontal Tab command, any horizontal print position on the current print
line can be specified as the print position.
NOTE: The control panel form feed key will operate differently depending on
the source of form feed control at the time the key is pressed. Form
feed is controlled by the LP+ and VGL emulation at different times.
The vertical print position can be changed using the Justification command or
justification parameter within one of the alphanumeric commands. The
Justification command or parameter specifies a vertical position down the
form from the current print position. Additionally, you can use standard
graphics commands for line slew, dot slew, line feed, form feed, or EVFU
commands to specify a vertical print position.
These positioning commands and their use are described within this chapter.
It is important to remember that the end of a command sequence always
resets the "origin" for all subsequent positioning to row 1, column 1 or the left
Graphics margin.
Vertical Dot Density
A vertical tenth-inch in normal resolution mode equals 7 dots based on 72 dpi
vertical dot density. A true vertical tenth-inch at 72 dpi would be 7.2 dots.
Since .2 dots is not printable, seven dots are used and the vertical
measurement of a line, box, or similar graphic element is not exact.
A vertical inch in high resolution mode equals 292/300 times the printer
vertical dot density. A vertical inch at 300 dpi would be 292 dots. Therefore,
when specifying the size of your graphic elements, be aware that the vertical
dimensions of your graphic design print slightly smaller than the value
specified in your command.
You can enable the "True vert 1/10" option which allows the vertical size/
position parameter to be in true inches. With this option enabled in normal
resolution, vertical dimensions are as close to true as possible based on a 72
dpi dot density (e.g., 1.0 inch is exact at 72 dots. While 1.2 inch is close at 86
dots, exact would be 86.4 dots.) In high resolution, with true vert 1/10, vertical
dimensions are exact or nearly exact due to the higher dot density.
Data Positioning
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