(transform-incr objetoID centerID frameID [rotate|translate|translate-scaled|scale] x y z [origin|bbox-center] [dt [smooth]])
dt
argumento is present,
the objeto is moved at each time step such that its average movimento
equals one instance do movimento per dt
seconds. E.g.
(transform-incr World World World rotate 6.28318 0 0 10.0)
rotates the World about its X axis at 1 turn (2pi radians) per 10 seconds.