BricsCAD has a lot of user interface elements for you to access information and carry out commands -- menu bar, ribbon, toolbars, panels, command bar, status bar, scroll bars, and more. Fortunately, it provides a way to dismiss them all to maximize the drawing area.
In this tutorial, you learn to press Ctrl+0 (or Cmd+0 of MacOS devices) to maximize the drawing area and then return to the normal interface. You also learn where in the Settings dialog box you control which user interface elements are hidden -- and which are shown -- in clean screen mode.