# Modulation of program flow

**URL:** <https://forums.visual-paradigm.com/t/modulation-of-program-flow/17497>\
**Category:** UML\
**Tags:** uml, modeling\
**Created:** [April 6, 2022, 1:35pm UTC](https://forums.visual-paradigm.com/t/modulation-of-program-flow/17497 "2022-04-06T13:35:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![khw](https://avatars.discourse-cdn.com/v2/letter/k/ecd19e/32.png) [@khw](https://forums.visual-paradigm.com/u/khw)\
**Post date:** [April 6, 2022, 1:35pm UTC](https://forums.visual-paradigm.com/t/modulation-of-program-flow/17497/1 "2022-04-06T13:35:18Z")

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Hi all,  
I am a new user of VP and like to know where I can found examples how program flow is modulated in UML.  
A program call procedures which call procedures and functions with parameters and returns results.  
Is there a possibility to modulate this in UML? Maybe with action diagram?  
Or is UML the wrong approach?  
If possible give me a info where I find examples.

Thanks

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**Author:** ![Jick](https://avatars.discourse-cdn.com/v2/letter/j/ea666f/32.png) [@Jick](https://forums.visual-paradigm.com/u/Jick)\
**Post date:** [April 13, 2022, 2:23am UTC](https://forums.visual-paradigm.com/t/modulation-of-program-flow/17497/2 "2022-04-13T02:23:46Z")

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Hi khw,

Thank you for your inquiry. Depending on the level of detail you need to model, I suggest you try with Sequence Diagram and Activity Diagram. The following article shows you more details and some examples.

What is Sequence Diagram?

> **[What is Sequence Diagram?](https://www.visual-paradigm.com/guide/uml-unified-modeling-language/what-is-sequence-diagram/)**
>
> Quickly learn UML Sequence Diagram. Read this UML guide for everything you need to know about Sequence Diagram.

Sequence Diagram Tutorial

> **[Sequence Diagram Tutorial](https://online.visual-paradigm.com/diagrams/tutorials/sequence-diagram-tutorial/)**
>
> \#1 Sequence Diagram Tutorial that helps you learn about What is a Sequence Diagram, How to create Sequence Diagram and When. Sequence Diagram examples, Sequence Diagram notations are provided.

What is Activity Diagram?

> **[What is Activity Diagram?](https://www.visual-paradigm.com/guide/uml-unified-modeling-language/what-is-activity-diagram/)**
>
> Quickly learn UML Activity Diagram. Read this UML guide for everything you need to know about Activity Diagram.

Activity Diagram Tutorial

> **[Activity Diagram Tutorial](https://online.visual-paradigm.com/diagrams/tutorials/activity-diagram-tutorial/)**
>
> Complete Activity Diagram Tutorial that helps you learn about What is a Activity Diagram, How to create Activity Diagram and when. Activity Diagram examples, Activity Diagram tips are covered.

Feel free to let us know if you have any questions.

Best regards,  
Jick Yeung