I think a Re-Run with some of the suggestions from today implemented would be in order sometime soon. The absence of any way to specify an interval for the auto-play is a major downside that should be fixed ASAP. It would have saved me an hour to find this.
If only it would have been shown permanently or if only this was explained somewhere. You have to click on the image to get to see a menu with the Auto Fill/Center/Apply to All buttons.
Yesterday I posted two comments in addition to #47 and #73 that did not appear here.