source files: xgtm.[ch], term/*.trm, gtplot.h
(GT-2D-POINT '(2 3)) (SEND <gtm:terminal> :2D-POINT '(2 3))
Plot a point. The x and y coordinates can be floats or ints, but should be in [0 (GT-2D-X-MAX)) and [0 (GT-2D-Y-MAX)) respectively.
This is an old-style call, not recommended for 3-D graphics.