How do i perform a ladder jump?

[B]

Whenever I see some speedrun videos, I see people jumping higher from ladder. I wonder how I can do that.

[cloudworm]

yeah, i never got this either

[AlanWaP]

I am also curious about it. Seems that world records use them frequently to get pieces without solving puzzles

[raistlin_fuego]

claro claro

[Patrick]

climb up a ladder, and less than 10 frames later, jump. simple trick, just takes a lot of practice