Plotters which understand HP-GL commands are supported. To use a plotter, draw a SMALL image (32x20 or 64x40) using the [v]iew screen options. Put a red pen in the first holder in the plotter, green in the second, blue in the third. Now press [P] to start plotting. Now get a cup of coffee... or two... or three. It'll take a while to plot. Experiment with different resolutions, plot areas, plotstyles, and even change pens to create weird-colored images.
1: Same as 0, but the lines are also twisted. This removes some of the 'order' of the image which is a nice effect. It also leaves more whitespace making the image much lighter, but colors such as yellow are actually visible.
2: Color lines are at the same angle and overlap each other. This type has the most whitespace. Quality improves as you increase the number of pixels squeezed into the same size on the plotter.