交互总览图：交互总览图是活动图的变体，它当中的节点表示交互图。
Interaction overview diagram: an interaction overview diagram is a variant of the activity diagram in which the nodes represent interaction diagrams.
任务之间的流，以及控制节点(决策、分叉、合并，等等)也在UML活动(UML Activity)中表示。
Flows between tasks, as well as the control nodes (decisions, forks, merges, and so forth) are also represented in the UML Activity.
flow是一个有向图，活动被表示为节点，所谓的links被表示为连接活动的边。
A flow is a directed graph with the activities as nodes and so-called links as edges connecting the activities.
应用推荐