TAS stands for "tool-assisted speedrun" or "tool-assisted superplay". It is a type of speedrun or playthrough of a video game that is composed of precise inputs recorded with tools such as video game emulators. The goal of a TAS is to complete the game as fast as theoretically possible, rather than as fast as humanly possible. During development of a TAS, its creator has full control over the games framerate, which when brought down to a still allows frame-by-frame movement to record a sequence of fully precise inputs. Other tools used in TAS include savestates and branches, rewriting recorded inputs, splicing together best sequences, as well as macros and scripts to perform automated actions. TASes can take anywhere between weeks to years to complete depending on the game and how many people are collaborating on it. The TAS community has developed a bunch of science-type norms, and TASes are often used to see how fast a game can theoretically be beaten.