[pstricks] LineThreeD

[Doris Wagner]

hi list,

if I want to have arrows in 2D-space, then I use \psline{->}(point 
1)(point 2)
if I want to have arrows in 3D-space, than I tried to use 
\LineThreeD{->}(point 1)(point 2)

but this does not function

any suggestions for obtaining 3D-arrows?

tia
doris