//surface.bvr\nh=parametricSurface\nh.setMinMax=s,-3,3\nh.setMinMax=t,-3,3\nh.setEquation=x,(s)\nh.setEquation=y,(t)\nh.setEquation=z,(1+s+t)\nh.setSegmentCount=20\nh.color=255,0,0\nh.spawn\n\n// Parametric surface\nsurf=parametricSurface\nsurf.setMinMax=s,-3,3\nsurf.setMinMax=t,-3,3\nsurf.setEquation=x,(t)\nsurf.setEquation=y,(s)\nsurf.setEquation=z,(1-t)\nsurf.setSegmentCount=20\nsurf.color=magenta\nsurf.spawn\n \n// Parametric curve\nc=parametricCurve\nc.setMinMax=t,-3,3\nc.setEquation=x,(t)\nc.setEquation=y,(0)\nc.setEquation=z,(t)\nc.setSegmentCount=70\nc.setThickness=0.2\nc.color=red\nc.spawn