Enables you to switch the full-screen mode of the Rich Text Editor.
SetFullscreenMode( fullscreen: boolean ): void
true to activate full-screen mode; false to deactivate full-screen mode.
In full-screen mode, the Rich Text Editor occupies the browser’s entire client region and can be resized with the browser window.
According to browser requirements, if the RichEdit control is contained in a frame, the SetFullscreenMode method should be called in a user-generated event handler (a button click, a key press) for security reasons.