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Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here.

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Co-Region Notation

Co-Region notation can be used as a short hand for parallel combined fragments. You can add this notation to a Sequence diagram using the 'Co-Region' submenu, which you display by right-clicking on a connector in a Sequence diagram and selecting the 'Co-Region' option. There are four sub-options available:

  • Start at head
  • End at head
  • Start at tail
  • End at tail

A UML Sequence diagram showing the use of co-regions in Sparx Systems Enterprise Architect.