In SimpLE, most of the screen is filled by a desktop environment, with a taskbar running along one edge, the bottom by default, and a HOME Button in its left corner. The taskbar fills with icons of any applications that are open at the time. This segment that can be scrolled if it becomes too large for its allotted space. Taking up at least the right half of the taskbar are the active application's iconographic controls.
Windows appear in the desktop environment, with a single bar along the top that can be filled with tabs for a tabbed interface. At the right of the bar is the close button. The top bar can also be clicked with different buttons to perform different actions on it. Double-clicking the top bar maximizes or restores the window, while middle-clicking closes the window and right-clicking collapses it to the top bar only. In addition, double-middle-clicking the top bar or double-clicking the close button will quit the application entirely, and double-right-clicking will minimize the window to the taskbar.
Pressing the HOME Button will display the HOME Menu, with a list of all installed applications in the place of the desktop environment, and a list of pinned applications in the place of the taskbar. The button can be pressed again to exit the menu. By default, the HOME Menu will also open when there are no open applications.
Alternate input method support
Several types of controllers can be connected to devices using SimpLE. Some, like the Display's m-control, can be used as a trackpad with multi-touch support, though most of them involve using buttons to select different things. The standard controls involve using and as Shift and Control modifiers respectively, to move a pointer, to move a menu-style cursor, the HOME Button to open the HOME Menu, and as left-click and right-click respectively, to select or confirm, to go back or cancel, to jump to the active window's top bar, and to jump to the taskbar.