beginfig(3)
pickup penround scaled 0.5;
z1=(1,2);
z2=(2,0);
z3=(3,2);
z4=(1.5,5);
z5=(2,7);
z6=(3,5);
draw z1{down}..z2..z3..z4..z5..{down}z6;
endfig;
end