We’re trying to make the data directory hold everything that the user needs to keep, tools for now and eventually additional post processors.
You can get to the data directory from the Help->About screen.
You can get to the tool database in the beta releases from the Edit menu.
CSV is the format we’re using to hold the tool database because we’ve got a lot of users who like to tweak things and that seemed like a neutral format. The format doesn’t matter though, you can copy it from one PC to another. If you want to create a Carbide backup script that you run periodically or before nuking your PC it should be simple enough, just copy everything in the data directory without have to explicitly import/export anything from the program itself.
(Everything above only applies to the Beta releases for the moment)