Thank you for the TiddlyWiki link! I've been trying for a while to find a program or system for organizing my story notes on my various projects (e.g. character bios, technology notes on the world, etc) and this has a lot of promise; I'm playing with it right now.

Question: do you know how to add tags in TiddlyWiki? I've been trying to figure it out, but I can't. It says at the bottom of each edit window to enclose tags in double brackets, but this just seems to create a new tiddler. I can't seem to add tags no matter what I try.