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[MulleDK19]

It does

Those parameters specify what kind of function you want to use, and if you have them wrong, no function will be called.

(string &in asEntity) = Interaction function
(string &in asParent, string &in asChild, int alState) = Collide function

For more information check this: http://www.frictionalgames.com/forum/thread-18368.html

I'm not asking you. I'm telling you. I've been programming for a very long time. Only the types matter. The names of the parameters on the wiki is only to help you know what they're for.

When the wiki states a callback signature like:
void MyFunc(string &in asParent, string &in asChild, int alState)

It's just stating that it's looking for a function returning void, and accepting 3 parameters: string, string, int.

What you name them in your script does not matter whatsoever.

This will work just as well:
void MyFunc(string &in entity1, string &in entity2, int state)

Or for that matter:
void MyFunc(string &in x1, string &in x2, int x3)