Well, I am not writing about all of them, just one :-)
Action sequences should be designed with a beginning, a middle,
and an end. For example, think about drag and drop:
At the beginning, you press the mouse button and see the object picked up with your cursor.
In the middle, you move the object across the screen towards your target, getting feedback that it’s coming along.
At the end, you release the mouse button, and see the effects of the drop.
The key feature of closure is the feedback you get at the end of the operation.
This assurance that the operation completed provides the user with a sense of accomplishment, some relief, and an opportunity to
clear their working memory of the details of the task in preparation for another.
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