Wallclips were a mystery to me for a long time, so I did some research and now want to explain how they work.
Previous video on the 1bm Triple:
https://www.youtube.com/watch?v=EbS12GelbQ4
Videos used:
Cynimal - +1.3125b jump with flat momentum
https://www.youtube.com/watch?v=IOrpHNqn5t0
hypickle_nub - Jumpcraft XII in 1:12:27
https://www.youtube.com/watch?v=hRqbTEGEpeM
kemytz - [1.8.9] Wall clip singleplayer/multiplayer
https://www.youtube.com/watch?v=_k0CIX-NvK8