Basic Concepts
1-7
Figure 1. 6. Print Direction
Coordinate Systems
With PRESCRIBE, positions on a page are described in terms of X and Y coordinates.
The origin of the coordinate system (the position at which X and Y both equal 0) is
located at the intersection of the top margin and the left margin. Values of X greater than
0 indicate positions to the right of the origin, and values of Y indicate positions below the
origin. See the figure on page 10. When the top and left margins are changed, the physi-
cal position of the origin changes accordingly.
Text Positioning
The printing system always keeps track of its current position on the page. The current
position can be thought of as a cursor that moves as data is printed. At any instant, the
Landscape print direction
Portrait print direction
Reverse portrait print direction
Reverse landscape print direction
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