There are several operations in Lustre that must be confirmed before they begin. For example, when rendering, capturing, playing out, or deleting material, you must first confirm the action.

When you launch an action that must be confirmed, the command button turns red after you click it. If you click the button again, the action commences.

If you do not want the action to begin (for example, you clicked the button in error), click anywhere in the grey area of the menu. This cancels the action.