Use one of the following three ways to close a Shell window:
We recommend closing Shell windows when you are finished with them. Any open window uses memory.
All non-detached programs that run from a Shell must be finished before you can close the window. You can tell that a program is still active if pressing Return does not produce a Shell prompt in the window. Although you can still enter commands into such a window, AmigaDOS does not respond to the commands until the running program is exited.