The program output window

To avoid excessive use of warning dialog boxes, cssed uses a list at the application's footer to show relevant but not critical output (see the Section called The program output, the scratch and static pads, and the terminal in Chapter 2). It is used by the CSS dialogs to warn about problems or default values in the dialog boxes.

It is also used by the validator to show its output.

You can clear this output window with the menu item Tools->Clean program output.