Okay, I’m not sure if this is ridiculous, inspired, or over-the-edge. The surreal webcomic Goats has so-called “extended info” (the grey area below the strip) for each comic. This info includes the dialogue text, locations and props in each panel. Also, for each character that appears in the strip, it lists first appearance and the three storylines the character most recently appeared in.
This information goes all the way back to the very first strip.