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Editorial Team
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Asked: 2026-05-12T17:53:00+00:00

I am trying to design an activity diagram (UML) for a networked tic tac

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I am trying to design an activity diagram (UML) for a networked tic tac toe game that I developed, with sockets. I am using activity partitions (swimlanes). So, there is three partitions: Client1, Server, and Client2.

The diagram is looking good, except I do not know how to represent loop structures.

If you look at this link: activity diagram, and look at the last diagram on the page (Partition), that is the type of activity diagram that I am working with.

Does anyone know how I can represent loops? Thanks!

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1 Answer

  1. Editorial Team

    Look further down the page you link to for Expansion Region. Use one with the iterative keyword.

    An expansion region is a structured activity region that executes multiple times. Input and output expansion nodes are drawn as a group of three boxes representing a multiple selection of items. The keyword “iterative”, “parallel” or “stream” is shown in the top left corner of the region.

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