After, a small square bounces around the screen like a ping-pong ball. If one types <Return>leave me alone<Return>, a message box stating Virus - Removed will be displayed and the program will exit.
To stop and remove the program, select File | List | List Open Files or click System in the upper right corner. Then, select virus.opo. Press Control + Shift + E and select Yes when prompted to kill the application. Next, find the file virus.opo and delete it. Be aware files and the process can easily be renamed.