I use 'key is down' and 'trigger once' together because of the triggered events not running in the normal order of the event sheet.
Why is that, btw? What's the point of having triggered events not run in the normal order of the event sheet? All it seems to do is screw up the order, which messes up the code sometimes, since the order the events are checked/run is important - why reorder them?
For that matter, why are some conditions 'triggered' and some not? What's really the difference between 'on click' and 'key is pressed'? What makes an event a 'triggered' one instead of a regular one?