The Isovist_App viewport controls are all found within the primary menu at the top left of the screen. To switch between fullscreen and window modes: 

• Select the ‘Viewport settings’ option from the primary menu, followed by ‘Toggle Fullscreen’. If in fullscreen mode, the Isovist_App should now switch to a window, and vice versa.
• When in window mode, the window can be dragged around using the title strip, and minimised to a bar or maximised using the ’Min’ and ‘Max’ buttons at the top right corner.