SVG Demo: Quadratic curves
M 50,200 Q 150,500,250,200
M 300,500 Q 400,200,500,500
M 550,500 Q 650,50,750,500
M 800,500 q 300,-250,300,0
M 50,850 q 300,-250,600,0
M 700,850 q 300,-250,600,0,-300,250,-600,0