I could be wrong, but it appears that the handy HOME & END buttons that take you to the beggining or the end of a composition respectively when timeline is selected, don't do the same when the script is selected. In the latter case, they appear to take you to the last or next clip, as opposed to the beggining or end of the composition. This seems to leave me with no one-tap way to play the whole thing from the beggining or jump to the end. PS: fwiw, I'm using the new timeline.