| 1. | All dialog windows that are in essence double-button windows must have only two buttons. Unless there is a special purpose, the left button should confirm the action and the right button should either cancel it or suggest an alternative. |
| 2. | All dialog windows must appear only against the background of the gaming field. No dialog windows should appear in the Help window or on a blank screen. |
| 3. | Sound must accompany the appearance of dialog windows. Sound is set in the style parameter of the cDialog class constructor. |