Way ahead of you. The book's "main" entry will be in boldface, with any supplemental entries elsewhere in the timeline in regular typeface. The main entry has cross references to all the sub-entries, and the sub-entries all cross reference back to the main one. So no worries on that score.Is there any possibility of for example accompanying each main entry for a novel or short story with something like "See also May 1st, 2151; SD 3467.1; SD 45921.3"?