A while ago I contacted Luke Lisi, a graduate of the University of Kansas and a designer at the Kansas City-based firm, Willoughby Design. He worked on Kiosk, KU'S graphic and literary magazine, which, despite going to Mizzou, I've managed to collect over the years. It's hard to actually describe, but he and a few other designers worked out a way to legibly "write" words on the edges of pages. I wanted to try something like that with Epic. Luke kindly went above and beyond and created a functional and beautiful tutorial for me. He's now using my question as his first post on a blog that he's going to fill with details on the things he learns and how-to's.
It's been a long day, so instead of reading my explanation, just visit Luke's blog and get inspired for yourself.