作为进一步的鼓励，当鼠标悬停在画布中的某个节点上时，将显示其“Short description”字段。
As a further encouragement, the contents of the short description field are now displayed when the mouse hovers over a node on the canvas.
这是一个简单的动画，当鼠标悬停在扇形图的某个扇区上时该扇区将弹出。
This is a simple animation that makes a slice of the pie pop out when it is moused over.
我已经给其中一个菜单项加入颜色表示鼠标悬停时的效果。
I've already colored one of the links in a dark blue color to represent a hover state.
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