QTP stores the definitions for application objects in a file called the Object Repository.
As you record your test, QTP will add an entry for each item you interact with.
Each Object Repository entry will be identified by a logical name (determined automatically by QTP), and will contain a set of properties
(type, name, etc) that uniquely identify each object.
Each line in the QTP script will contain a reference to the object that you interacted with, a call to the appropriate method (set, click)
and any parameters for that method (such as the value for a call to the set method).