DEFINITION MODULE SSBack; (* (C) Copyright 1991 by Stuart J. Whitmore. Permission to copy and distribute without profit granted. Permission to use in applications royalty-free granted. All other rights reserved. *) PROCEDURE BlackBack; (* Change / return to black background. *) PROCEDURE RedBack; (* Change to red background. *) PROCEDURE GreenBack; (* Change to green background. *) PROCEDURE YellowBack; (* Change to yellow background. *) PROCEDURE BlueBack; (* Change to blue background. *) PROCEDURE MagBack; (* Change to magenta background. *) PROCEDURE CyanBack; (* Change to cyan background. *) PROCEDURE WhiteBack; (* Change to white background. *) END SSBack.