Subflow steps
Subflow steps can be added to a Flow to call another Flow as a 'subflow'.
Overview

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Adding a subflow step to a Flow allows you to call another Flow. When the subflow step is reached in the Flow, the content of the referenced subflow is inserted wherever the subflow step is located in the Flow.
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A return step can then be added in the child Flow to return a user back to the primary Flow. Refer to Return steps.
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To learn more about using subflows, refer to Subflows.
Adding comments to a step
Comments can be added to a subflow step.