![uml - How to identify actions instantiated from same activation bar is not happened concurrently? (Sequence digram) - Stack Overflow uml - How to identify actions instantiated from same activation bar is not happened concurrently? (Sequence digram) - Stack Overflow](https://i.stack.imgur.com/0Ui2s.png)
uml - How to identify actions instantiated from same activation bar is not happened concurrently? (Sequence digram) - Stack Overflow
![Sequence diagram illustrating vertically folded activation boxes in... | Download Scientific Diagram Sequence diagram illustrating vertically folded activation boxes in... | Download Scientific Diagram](https://www.researchgate.net/publication/228716472/figure/fig7/AS:301986596573207@1449010623981/Sequence-diagram-illustrating-vertically-folded-activation-boxes-in-red-with-regular.png)
Sequence diagram illustrating vertically folded activation boxes in... | Download Scientific Diagram
![Inconsistent usage of activation bars in sequence diagram of addReader · Issue #15 · Tomashiwa/pe · GitHub Inconsistent usage of activation bars in sequence diagram of addReader · Issue #15 · Tomashiwa/pe · GitHub](https://raw.githubusercontent.com/Tomashiwa/pe/main/files/e42c6357-be63-4974-8d75-2fbfb85dc825.png)
Inconsistent usage of activation bars in sequence diagram of addReader · Issue #15 · Tomashiwa/pe · GitHub
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