Hi Cristoph. You missed a opening parenthesis sign - '(' after "\pstThreeDLine". Wrong: >> \pstThreeDLine0,0,0)(2 \PhiI\space cos mul 1.5 add, \PhiI\space sin, 0) Right. >> \pstThreeDLine(0,0,0)(2 \PhiI\space cos mul 1.5 add, \PhiI\space sin, 0) WBR Ali Shadow