WinRunner stores information it learns about a window or object in a GUI Map. When WinRunner runs a test, it uses the GUI map to locate objects. It reads an object.s description in the GUI map and then looks for an object with the same properties in the application being tested. Each of these objects in the GUI Map file will be having a logical name and a physical description. There are 2 types of GUI Map files. Global GUI Map file: a single GUI Map file for the entire application. GUI Map File per Test: WinRunner automatically creates a GUI Map file for each test created.