If the cursor is hidden off screen when a program ends, the DOS prompt will not be visible. The user may think that the program has hung or the system has crashed, since he or she never sees the prompt appear on the screen. The user should execute the DOS command cls to clear the screen and restore the DOS prompt. A better solution is to have the program explicitly move the cursor to some visible location. vv_exit() will do this for the terminal-based versions; you are responsible for doing this under PCDOS.
