Within some versions of the Adobe^® Reader, the 3D functionalty is deactivated. Please activate them to be able to use our demonstrations (within "Edit" - "Preferences" - "3D & Multimedia"):

To get optimal 3D functionality within the Adobe^® Reader, you can use furthermore the following settings (within "Edit" - "Preferences" - "3D & Multimedia"):

- Preferred Renderer: DirectX9
- hardware rendering for legacy video cards: disable
- Framerate Threshold: use low value, e.g. 3

(these settings are NOT necessary, but allow better 3D functionality of the Adobe^® Reader)