//GroupWorkMobius.bvr\n\n//Parametric surface\nt=parametricSurface\nt.setMinMax=s,-1,1\nt.setMinMax=t,0,6.5\nt.setEquation=x,(cos(t)*(3+s*cos(t/2)))\nt.setEquation=y,(sin(t)*(3+s*sin(t/2)))\nt.setEquation=z,(s*sin(t/2))\nt.setSegmentCount=30 \nt.color=blue\nt.spawn\n\n\n//Parametric curve\na=parametricCurve\na.setMinMax=t,0,13\na.setEquation=x,((1/5)*(-3*cos(t)*sin(t/2)/sqrt((9*sin(t/2)*sin(t/2))+((3*sin(t)*sin(t)*sin(t/2))+(3*cos(t)*cos(t)*cos(t/2)))^2))+(cos(t)*(3)))\na.setEquation=y,((1/5)*(-3*sin(t)*sin(t/2)/sqrt((9*sin(t/2)*sin(t/2))+((3*sin(t)*sin(t)*sin(t/2))+(3*cos(t)*cos(t)*cos(t/2)))^2))+(sin(t)*(3)))\na.setEquation=z,((1/5)*(((3*sin(t)*sin(t)*sin(t/2))+(3*cos(t)*cos(t)*cos(t/2)))/sqrt((9*sin(t/2)*sin(t/2))+((3*sin(t)*sin(t)*sin(t/2))+(3*cos(t)*cos(t)*cos(t/2)))^2)))\na.setSegmentCount=60\na.setThickness=0.07\na.color=red\na.spawn