# Processing `App` This is the PDE, the visual part of the editor that you see and work within when you use Processing. ## Important classes The main class of this project is the `src/.../Base.java` this is where the PDE starts after the splash screen. The `ui/Editor.java` class is the class that is instantiated to show an editor window of the PDE. `Mode.java` is the class that any mode within Procesing inherits from.