How to edit backend pages efficiently?

[prestalord]

Hi, I have a general question and I would appreciate some help.

 

There are any tools to find what files are involved when you press a button? for example I go to the orders tab and when I edit an order there's an update button. How can I track what pages are involved when pressing that button?

 

With google chrome examine function, I can locate the .tpl page, in that case _product_line.tpl and I also know that each database has a class file, which would be OrderDetail.php , however none of these 2 files has any update function, not even a <form> tag with POST action.

 

Thats all I know, help please.