At the start of the application you will see the Info tab with a quick guide
Click the Open button to show folder browser dialog to select a folder for displaying
Any time you can click the Open button again and select another folder for exploring
Double click on file to open its containing folder in Windows Exlorer
This way you can remove unnecessary files and folders
The squarified treemap layout algorithm used by the application produces a good aspect ratio for drawn rectangles (close to 1:1). But some long file names may be cutted and difficult to read
Hover mouse over the file or folder to see its full name in the header bar at the top right of the application
Double click on folder to display it as root to see more its content
Double click on root folder to set its parent folder as root
Suppose you displayed deeply nested folder. Then you can to double click on the header bar to display previous root folder
