Is there a way of changing the QBasic edit and output screens (eg after a screen 12 statement) from full screen back to the QBasic window without exiting and re-loading a program?
Alt + Enter from the edit screen changes the edit screen from full screen to a window only temporarily. Going to the output screen (eg by a PRINT statement or F4) and then back to the edit screen brings the edit screen back to full screen again.
Alt + Enter from the output screen only minimises the screen. On maximumising, the full screen is displayed again.