The pldj command also connects points, but as disjoint line segments:

pldj, x0, y0, x1, y1 |

connects `(x0(1),y0(1))` to `(x1(1),y1(1))`, then
`(x0(2),y0(2))` to `(x1(2),y1(2))`, and so on. Unlike plg,
where y and x are one dimensional arrays, the four arguments to pldj may
have any dimensionality, as long as all four are the same shape.