HP 8753E Programming And Command Reference Manual page 147

These 5 commands select the pen (value for D) for plotting the indicated
display feature for the active channel. Range: 0 to 10.
Data trace.
Graticule.
Markers and marker text.
Memory trace.
Text and user graphics.
Selects whether the graticule is plotted.
Sets the phase offset. Range: 0 to 360
degrees.
Selects the phase display format.
Selects the pen speed for plotting. (Slow is
useful for transparency plotting.)
Initiates a plot.
Selects the plotter handshake mode as
either Xon-Xoff or DTR-DSR.
Sets the plotter port to disk (either
internal disk or external disk).
Sets the plotter port to HP-IB.
Sets the plotter port to parallel.
Sets the plotter port to serial.
Turns ON and OFF the plotter auto feed.
Sets the plotter baud rate. Values: 1200,
2400, 4800, 9600, 19200.
Sends a form feed to the plotter.
Selects HP-GL compatible printer as the
plotter type.
Selects plotter as the plotter type.
Selects whether memory is plotted.
Selects whether markers are plotted.