I got used to looking for registry tweaks, but I don't even know what to call it exactly.

The closest I've got is: A place for accessing hidden settings in Windows. I've made a couple typos in there and nuked an install or two of XP, but I never really changed much personally. Just kinda looked up various ways people would use it to accomplish x, y, or z, out of curiosity.

I don't have to deal with it anymore at least.