A ZenUML diagram/graph or Open API spec can be created within any Confluence page, provided you have permission to edit the page.
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/zenuml
.The macro is pre-populated with a default sequence diagram as below:
Click the PEN icon below the macro to enter the edit mode.
When you finished editing, you can save the diagram by clicking the “Save” button. After saving a diagram, it can be edited at any time - click on the diagram, and then click on the PEN icon in the toolbar.
In view mode, you can search on the diagram by using standard browser searching functionality.