A good example of this is behavior of butcons (iconlike buttons) on toolbars: Although there is no persistent buttonlike affordance of the butcon, passing the cursor over any single butcon causes the affordance to appear.

• 这种行为的一个好例子是工具栏上的图钮（看起来像图标的按钮），图钮虽然没有常规的按钮启示，但当光标从任何一个图钮上经过时就会出现启示。