CHAPTER 4 HP-GL/2 - 18
7.3. Pen Control and Plot Instructions
Instruction Function
PU Pen Up
PD Pen Down
PA Plot Absolute
PR Relative Coordinate Pen Move
AA Absolute Arc Plot
AR Relative Arc Plot
AT Absolute Three Point Arc
RT Relative Three Point Arc
PE Polyline Encoded
CI Circle
BR Bezier Relative
BZ Bezier Absolute
PU - Pen up
PU [ X,Y [,...]] [;]
X ; X coordinate of the cursor movement destination
Y ; Y coordinate of the cursor movement destination
X and Y are either relative or absolute, depending on whether a PA or a PR was the last plot command
executed. The absolute coordinates are set as default.
You can specify as many coordinate pairs as you wish. The cursor moves to each point in turn without
drawing.
Using this instruction without a parameter field raises the pen without changing the cursor position.
Coordinates are specified in the currently selected unit.
In symbol mode PU draws the specified symbol at each point in the parameter list.
In polygon mode the specified coordinate pairs are placed in the polygon buffer.
If an odd number of coordinates are specified, the final (unpaired) coordinate is ignored.
PD - Pen down
PD [ X, Y [,...]] [;]
X ; X coordinate of the cursor movement destination
Y ; Y coordinate of the cursor movement destination
X and Y are either relative or absolute, depending on whether a PA or a PR was the last plot command
executed. The absolute coordinates are the default setting.
You can specify as many coordinate pairs as you wish. The cursor moves to each point in turn, drawing
lines on the page.
Using this instruction without a parameter lowers the pen without changing the cursor position.
Coordinates are specified in the currently selected unit.
In symbol mode PD draws the specified symbol at each defined point on the x- and y-axis.
In polygon mode the specified coordinate pairs are placed in the polygon buffer.
If an odd number of coordinates are specified, the final (unpaired) coordinate is ignored.
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