Someone plz explain the black magic of the "Eat 'em All" example

I have looked and looked and looked, and for the life of me I CANNOT figure out how the Pacman-esque player is controlled. It basically has one behavior, Bullet, and a handful of variables attached, but I can't find ANYTHING anywhere else in the game that even addresses the Player, other than a life count. Somehow the buttons are affecting the player's bullet behavior, and something is causing the player to slide from one tilespace to the next and stop, but WHERE IS IT??? At my wits end here over a stinkin pacman game.

Look like it's in the event sheet under event 1. To the left of the event there's an arrow that you can click on to show the sub-events. There you see keyboard events that handle the movement.

Good.

Grief.

I have NEVER noticed that stupid arrow before. I didn't know you could nest like that. > INSERT FACEPALM HERE <

Thanks!