AMT Datasouth PAL - Manual (Page 88)

_dspclear
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_dspclear
Description
Clear an area of the printer's front panel character display.
Usage
BBoxArray _dspclear
BBoxArray Array. Bounding box for area to clear.
[ Left Top Right Bottom ]
Left Integer or fixed-point. Left-most character column of display area to
clear. The interpreter includes this column as part of the area cleared.
Top Integer or fixed-point. Top-most character line of display area to clear.
The interpreter includes this line as part of the area cleared.
Right Integer or fixed-point. Right-most character column of display area to
clear. The interpreter includes this column as part of the area cleared.
Bottom Integer or fixed-point. Bottom-most character column of display area to
clear. The interpreter includes this line as part of the area cleared.
Comments
The BBoxArray parameter specifies the bounding box of the display area which the operator will
clear. The BBoxArray array object must contain the four values shown above.
These four values establish a rectangular region of character positions on the display for the op-
erator to clear. Left specifies the left-most character column to include as part of the clear opera-
tion. Right specifies the right-most character column to include. Top specifies the top-most line to
include. Bottom specifies the bottom-most line to include.
Although variations may occur between different PAL printers, in general column 0 specifies the
left-most column of the display and row 0 specifies the top-most row. The column numbers
increment to the left, and the row numbers increment down.