i haven't been able to get it to work in recent updates of the game, and i'm unsure of how i got it to work in the first place. either it was present in earlier releases or i tinkered around too much with cheats and somehow unlocked the ability to do it.I can't get this to work in 2.9.1 w/o translation- are you sure this is actually a thing? I don't see it mentioned elsewhere.
It's a little disappointing how small the update is after ~6 months, but the more fleshed-out walkthroughs and translation help effectively 'add content'.