Skopeo has an independent running animation clock. It provides platform-independent animation. Skopeo can support different user-defined animation languages and control panels. I recommend Netscape Communicator 4.0 and CosmoPlayer . The following paragraph explains, how to handle Skopeo-Animation.
FIT changes the zoom-factor and the shift, so the hole scene fits on the window.
The backgroundcolor is changeable. It is possible to check the debug-mode button this button opens a dialog for several debug options. It is possible to zoom in the scene by marking an area by mouse click and drag.