Each node also has a color that makes it possible to display it.
每个节点还有一个颜色，以使得它可以显示出来。
By default, this level is set to 0.20, and so there is a twenty percent probability that any given node will change its value and color.
默认情况下，这个标准设置为0.20，这样任意给定的节点就有百分之二十的可能会改变其值和颜色。
Define and apply a style to a selected node based on the edit action (for example, change color, strikethrough text, and so on).
基于此编辑动作，定义和向所选中的节点应用某种样式(例如，修改颜色、为文本加删除线等)。
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