Focus Stack. A permanent breadcrumb at the top is your altitude control: All films › My Picks › One film › Double bills. One number decides how zoomed-in you are. Tap any crumb to jump straight there — you can never get stranded, and moving between levels never empties your picks. Add films with the + button (it stays lit); they persist on this phone. "Double bills" finds real back-to-back pairs from your picks for the chosen day.