W=300 H=433 pi=arccos(-1)
 win(W,H,255,255,255) win(-W-8,-20)
 pen(1,0,0,0)  {толщина линии, цвета RGB } 
 [A y=H/2]GRAPH(a,x,y,x,2,W-3,W-4) { ось X }
 [A x=W/2]GRAPH(a,x,y,y,2,H-3,H-4) { ось Y }
 [A fun x=W/2+r*cos(t) y=H/2-r*sin(t)]

 pen(1,255,0,0)
 [fun r=200*sin(t)*cos(3*t)]
 GRAPH(a,x,y,t,0,2*pi,pi/200)

 pen(1,0,0,255)
 [fun r=300*sin(t)*cos(t)]
 GRAPH(a,x,y,t,0,2*pi,pi/200)

 Результат: