I've seen runs where players skip cutscenes... how do they do it?

„Cutscenes Skip using Pregame Storage” section in “Guide to Eveything” by @Xar149Xar149, @SunShardSunShard and @HoloKnightHoloKnight.

https://docs.google.com/document/d/1paLP8D202WJ2BSUP_7bTbzU6NyJ9ctypXsgFcahcboM/edit?usp=sharing

thanks, but where would I find this