Click the arrow keys in bottom right to toggle them F/G - go to the last/next frame X - advance to next frame (this is what you're gonna be using most of the time) R - reset TAS completely E - quickly test TAS, press E while clicking green flag to play TAS with timer working properly L - lock in the TAS (stop editing, so it will always play when you click the green flag - can be undone by pressing L again) (You can hold F, G or X instead of tapping them to transition multiple frames smoothly)
V2 Beta is out: scratch.mit.edu/projects/1273254217 A TAS tool for the game "Zenith" by @Demonic_Chicken and @-Turbowarp: https://scratch.mit.edu/projects/1190759830 Example TAS: https://scratch.mit.edu/projects/1260768434/