transfer, load, derive, graphics
ISOMETRICS([SIN(v), SIN(2 v) SIN(u), SIN(2 v) COS(u)], u,0,2 pi,20,v,-pi/2,pi/2,10)
ISOMETRICS([SIN(v), SIN(2 v) SIN(u), SIN(2 v) COS(u)], v,-pi/2,pi/2,10,u,0,2 pi,20)