I'm playing around with running this again. I've noticed several things in recent high-end runs that are new to me, and of course they aren't explained in the runs themselves.

1. In the attached screenshot, taken from Kanaris' run, how do you make this jump? I've been trying to replicate this in game and I can't seem to make it work. I never reach the far platform there. I notice right before this jump he respawns right when he hits the checkpoint, presumably to reset the cycle. I also notice a seemingly pointless hop right before he performs the jump. Can't seem to replicate this, so I'm assuming there's a mechanic somewhere here I'm not familiar with, unless the jump really is just that precise.

2. I noticed in Kanaris' guide to autosplitting, he mentions "Avoid alt and F2 as these have functions in Wings of Vi." What function does alt have?

That's all I can think of for now but I'm sure there's more. Thanks!