On 6th December 2002 Forschungszentrum Jülich (Germany) inaugurated a development which is unique within the worldwide fusion effort. The Dynamic Ergodic Divertor (DED) has been installed in the TEXTOR tokamak to improve the control of the fusion process, especially addressing the transport of energy, heat and particles in the plasma boundary. The DED consists of 18 single coils, which are fixed to the inner torus walls, exactly where the magnetic field lines hit the vessel. The heat fluxes are normally concentrated by the field lines, forming surface hot spots that may withstand damage only for a limited time before being overheated. The DED coils produce a rotating (dynamic) distortion of the magnetic field, and the closed magnetic field lines are broken up (ergodised) by vortices at the plasma edge. This helps to spread the heat from the plasma boundary over a larger surface. Moreover, it will allow for a better control of energy and particle transport in the plasma boundary. The principle of the ergodic divertor was experimentally proven for the first time on Tore Supra at the Association Euratom-CEA Cadarache (France) based on theoretical studies performed at Jülich and Cadarache in the 1980s. The addition of the dynamic concept of rotating magnetic fields is a pioneer project led by Forschungszentrum Jülich.