  We present the control of the high-dimensional chaos, with possibly a large
number of positive Lyapunov-exponents, of unknown time-delay systems to an
arbitrary goal dynamics. We give an existence-and-uniqueness theorem for the
control force. In the case of an unknown system, a formula to compute a
model-based control force is derived. We give an example by demonstrating the
control of the Mackey-Glass system towards a fixed point and a
R\"ossler-dynamics.
