It surely isn't the best idea to try and recreate Wikipedia with Tiddlywiki, but for concise documentation on specific issues it looks like a tool that I don't want to miss anymore.
A bit special is the fact that the HTML obviously needs to be saved in order to keep your changes (The modified DOM tree of the document needs to be persisted). ON XP SP2 the OS uses certain NTFS features to remember that Html files came from the Internet. Hence, downloaded docs run in the restricted Internet zone -> saving feature does not work. This, however, can be turned off in the file's properties.
Secondly, when having the file on a file sharem saving doesn't work either. What you have to do is
- Drag to the desktop and open
- Once you want to save, confirm that ActiveX can be dangerous
And off you are. Check out the tiddle, I think it's lovely