Sets the entity to be rendered by the model panel.
entto a shared entity you must set
entto nil before removing this panel or else a "Trying to remove server entity on client!" error is thrown
Implementation of a function called StartBreencast which makes Dr. Breen recite his instinct speech within a model panel that's displayed to all clients. This mainly demonstrates how even shared entities such as NPCs can be used with DModelPanel as long as they're networked properly.