//GroupPortion.bvr\n\n// Parametric surfaceM\npM=parametricSurface\npM.setMinMax=s,-1,1\npM.setMinMax=t,0,6.5\npM.setEquation=x,((3+s*cos(t/2))*cos(t))\npM.setEquation=y,((3+s*cos(t/2))*sin(t))\npM.setEquation=z,(s*sin(t/2))\npM.setSegmentCount=30\npM.color=green\npM.spawn\n\n// Parametric curveWrap\nwrap=parametricCurve\nwrap.setMinMax=t,0,13 \nwrap.setEquation=x,(3*cos(t))\nwrap.setEquation=y,(3*sin(t))\nwrap.setEquation=z,(0)\nwrap.setSegmentCount=70\nwrap.setThickness=0.2\nwrap.color=red\nwrap.spawn