After reading the examples, Tuj felt that he understood them well except that Tuj was still at a loss as to how to write his own extension. Well, Tuj decided to start with the pop-up. He wanted a button to reset a variable for easier debugging. He quickly made an

Then Tuj went on to make Your Second Extension and rendered many sites useless. One clicks the add-on's icon to get a pop-up which contains a script that registers an event listener which listens for clicks in the pop-up. If a click is detected then it injects a script (which