A small fix round for reading branching comic specials, found while reading The Alpine Telegraph.
Back means back. In a branching comic, the previous-chapter button now follows the story tree to the chapter you actually came from. Before, it could land on a chapter from a neighboring branch, whose choices then couldn't lead you forward again.
See where a chapter hangs. In a branching special's chapter list, hovering a chapter shows the parent chapters that lead to it. Numbers like 3.2 tell you the depth. The hover path tells you the branch.