[rescue] Vector Plotters

[Mouse]

> While vector displays are indeed capable of continuous positioning,
> as opposed to discrete positioning, the vast majority of vector
> displays are driven from digital things, via a D/A converter.  So
> there are discrete steps in there anyway.

Well, line endpoints may be quantized, but that's not to say that the
rest of the line will be.

Another possibility is to use digitally controlled analog electronics
to drive the display - for example, displaying Lissajous figures where
the frequencies and phase are digitally controlled but the details of
the figure are not.

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