Does a diagram of the key input subsystem exist?

[Perry E. Metzger]

So in an attempt to debug the input method I've been trying to write, 
I've been trying to understand how typed keys make it from the user up 
to the point where processing stops, and failing very miserably. The 
elisp manual has a maze of hints, but they're not nearly as informative 
as I would have hoped.

Is there anything like a document or diagram that lists the steps, 
translation tables, maps, etc. that every keystroke goes through in its 
journey? My guess is no, but I thought I would ask.


Perry