The File menu contains items that allow you to open files and Quit QXPMarkz SE
Selecting Open brings up a standard Windows Open File window allowing you to navigate to and select the InDesign file you would like to convert. You can also use the shortcut key combo of Control-O.
The Open Recent menu item contains a list of the most recently converted files. This can be handy if you have made changes to a file and wish to reconvert it.
Selecting Exit will quit the QXPMarkz SE program. You can also use the shortcut key combo of Control-X.