Chapter 1 Introduction to PRESCRIBE
1-10
Figure 1. 9. Logical Page and Physical Page
With the standard mode logical page, any position specification that lies outside of the
logical limits is automatically adjusted to bring it within the limits. For example, the
page on the upper left in the preceding figure shows what happens if you attempt to draw
a diagonal line from below the bottom edge limit to a point to the right of the right edge
limit when the standard mode logical page is used. The fine line represents the line as
specified by the user; the thick line shows what is actually drawn by the printing system.
With the path mode logical page, coordinates are not adjusted even if they fall outside of
the edge limits. In this case, as shown in the lower right page in the preceding figure, the
line is defined by the specified starting and ending points, but parts falling outside of the
edge limits are clipped.
Command Parameters
Numeric Parameters
Many of the PRESCRIBE commands use number values to specify parameters. For
example, numbers are used to specify distances in inches, centimeters, points, or dots.
Negative numbers are also allowed.
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