Exposure will layout your photos using an algorithm that is based on how much space is available on the screen. To change the order of your photos, drag and drop the thumbnails below. Changes will be saved instantly.
Footnotes:I owe this fascinating day of exploration to Marcin Wichary (@mwichary). His recent (fantastic) post of this same location is what led me here. Canon T3i - VSCO Film. Title from "Into the Wild"