iwconfig file update question

[Terry Linhardt <linhardt@xxxxxxxxxx>]

I've looked at the man for iwconfig, but could not find an answer to 
this question:

When I use iwconfig to update wireless parameters, I'm "assuming" there 
is a file that gets updated somewhere. Is this an ASCII file that can be 
directly edited? Or, is iwconfig updating a binary file somewhere on the 
system?

Thanks..Terry