Key press to trigger 'draw' event
In Powerpoint, one powerful feature in animations is waiting until the user presses a key (or clicks a mouse button) to draw the next object. In Doodly, this feature doesn't exist; the next draw event is always based on the prebuilt timing. The reason this feature is valuable is to coordinate timing with voiceovers. Rather than repeatedly tweaking the delays -- or re-recording the voice overs -- the user will get it right the first time by having explicit real-time control over when Doodly begins the next draw event.