One of the most frustrating things about using your Palm Powered device as an ectopic brain is trying to figure out a way to represent branching algorithms in an easy-to-use fashion. I've experimented with bookmarked Doc files and hyperlinked documents using iSilo in the past, but have found the results less than satisfactory in most cases.
MindMapper, from StepByteStep, lets you create attractive, easy-to-follow visual branching algorithms right on your PDA. You can customize the color selections for branches, text, and backgrounds, move branches using drag and drop, create custom categories, assign custom icons, and more.