The debug window displays the sequence of events and reactions in the system. 

The debug window is described in the figure.

The debug window has the following features:

1. Placed on top of other windows;
2. To change the size of the debug window, use the mouse;
3. You can copy the information on event or reaction to the Windows clipboard and then use it in programs;
4. You can filter events and reactions displayed in the debug window;
5. You can highlight events and reactions displayed in the debug window;
6. You can search for events or reactions in the debug window.

You can use regular expressions to highlight and filter messages in the debug window.