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.

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HEAD条目是用户应集成的主要代码流(如果它们需要自己分叉并稍后与HEAD流合并，这主意不错)。

The HEAD stream is the main code stream that users should be integrating to (if they want to branch off on their own and then merge with the HEAD stream later, that's fine).

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分叉代码(合并冲突)。

Diverging code (merging conflicts).

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