3D Charts
cloud() {lattice]

cloud(gnpserv ~ gnpagr*gnpind | continent, data=world) produces 3D clouds

scatterplot3D() {scatterplot3D()]

scatterplot3d(gnpagr,gnpserv,gnpind)

plot3D() {rgl]

plot3d(gnpagr,gnpserv,gnpind) produces a 3D chart you can rotate using the mouse.