From: Newgamer2009 | #003 But what does tool-assisted mean?
Basically means using a ROM and emulator to slow down the game in order to do things that aren't normally possible. They use frame advance in order to tricks that require input in a very precise amount of frames. Offhand, I don't know any TAS-only tricks for OoT, but a good example is in the original Ninja Gaiden for the NES where you would normally climb up ladders, but a TAS will be able to pretty much fly up a ladder.
There's a form of infinite supersliding that moves just as fast as supersliding, but it requires hitting the Z button once every... I think 2 frames. If you are off even once at all, it will stop hence making it a TAS-only kind of technique.
Samus ruined Metroid forever. She keeps killing them. ~CTsChoco