//Mobius.bvr\nhelix=parametricCurve \nhelix.setMinMax=t,-6.28,7.28 \nhelix.setEquation=x,(3*cos(t)+0.2*sin(t/2)*cos(t)) \nhelix.setEquation=y,(3*sin(t)+0.2*sin(t/2)*sin(t)) \nhelix.setEquation=z,(-0.2*cos(t/2))\nhelix.setSegmentCount=70 \nhelix.color=red \nhelix.spawn \n//\ncyl=parametricSurface\ncyl.setMinMax=t,0,6.28\ncyl.setMinMax=s,-1,1\ncyl.setEquation=x,((3+s*cos(t/2))*cos(t))\ncyl.setEquation=y,((3+s*cos(t/2))*sin(t))\ncyl.setEquation=z,(s*sin(t/2))\ncyl.setSegmentCount=50\ncyl.color=yellow\ncyl.spawn\n