Does anyone know of a way to use console commands or creation kit to anolyze an existing function/command?

Specifically, I'd like to dig in to showracemenu() and see how they did the character facing bit . . . more specifically, the part where when you drag the mouse, the char's head moves.

the goal is that I'm interested in manipulating where the player/npc is looking and there either isn't a core function for it, or it's named something without the words face, view or look (or permutations) in the name or description.

I could be wrong, but some of those things sound like they are hardcoded.