Each slide in a presentation is loaded as an individual external Flash asset and can be augmented with any SWF file. When working with embedded SWF files, follow these guidelines:
Author the Flash SWF file at 30 frames per second. Presenter presentations are created at 30 frames per second, so Flash files with the same setting can be integrated into the presentation smoothly.
In Flash, set the maximum canvas size to 720 x 540 pixels.
Don’t use _root or absolute movie clip references. Use relative paths in the MovieClip object references, not _root.
The SWF file you want to embed must not attempt to make any changes outside its own file. Therefore, the code cannot refer to the following variables: _level#, _global, or stage.