pubsub questions

[Han Nguyen]

Hello,
I'm a JavaScript and Shindig newbie. I have 2 questions:
1. I have the pubsub sample working, and would like to learn more on how 
the pubsub and rpc code work. Could anyone please explain or give me some 
pointers?

2. I did an alert on the on the router of the pubsub.js "alert('pubsub: '
+router);", it displayed

pubsub: function A(E, C, D) {
    var F = B[E];
    if (typeof F === "function") {
        F(C, D);
    }

What are those letters? the original source code didn't look like that. Is 
it somehow compressed? if so then can I turn compress off? if not please 
explain.

Thanks!
Han