open X11, from Applications/Utility

load(draw);

after loading, a simple use ...

draw3d(points([[1,2,3]]));

or, in a more complicated way ...

p:points([[1,1,3], [10,1,2]]);

v1:vector([1,1,3],[5,1,1]);

v2:vector([10,1,2],[-4,1,2]);

draw3d(p,v1,v2);