You can change the text box border and size, or set a background by:
•Selecting the text box and using commands from the Format Tab.
•Opening the format dialog. To open the format window, right-click on a text box and select Format from the pop-up menu. (Note: If the text box is inside a plot make sure that the text box is in edit mode). The format window allows you to change the border, size, and background of the text box by selecting the appropriate category from the dropdwon. The default background for a text box is transparent.
•Text boxes derived from quadrant statistics are referred to as Label Text Boxes. Please see the section on Quadrant Label Text Boxes for formatting instructions.