
To see an animation, please choose a topic and then click on the movie icon

.
The player installed on your computer will now open and you can
play the 3D-animation.
Please note that the animations are frequently complex. For full benefit you will need to work with them, watch them
several times, go back and forth and sometimes stop. To do this, please use the appropriate buttons on your player. The animations can
also be saved to your hard disk. For further questions please use the help function on your player.