//a.bvr\n\n//Parametric surface\nt=parametricSurface\nt.setMinMax=s,0,6.5\nt.setMinMax=t,0,6.5\nt.setEquation=x,((2+1*cos(t))*cos(s))\nt.setEquation=y,((2+1*cos(t))*sin(s))\nt.setEquation=z,(sin(t))\nt.setSegmentCount=30 \nt.color=green\nt.spawn\n\n//parametricCurve\ny=parametricCurve\ny.setMinMax=t,0,6.5\ny.setEquation=x,(0)\ny.setEquation=y,(2+1*cos(t))\ny.setEquation=z,(sin(t))\ny.setSegmentCount=30\ny.setThickness=.15\ny.color=red\ny.spawn\n\n//parametricCurve\nu= parametricCurve\nu.setMinMax=t,0,6.5\nu.setEquation=x,(3*cos(t))\nu.setEquation=y,(3*sin(t))\nu.setEquation=z,(0)\nu.setSegmentCount=30\nu.setThickness=.15\nu.color=white\nu.spawn