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触发和扩展一系列操作
除了单一的功能触发外，通过悬浮按钮更常用于触发一系列的操作，通过扩展，用一组相关、常用的悬浮按钮来替代原来的单一交互。常见的形式有拓展按钮，拓展表单等。
作为一般规则，这组拓展出来的按钮不应少于3个，不能多于6个，否则违反了作为悬浮按钮的快速、高效的原则。
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