Start step
The Start step represents the beginning of your Flow on the Flow canvas.
The Start step does not get rendered to an user when a Flow is run or published. It is only used as a starting point to connect to when you begin adding steps to the Flow canvas.
Overview

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When you create a Flow and open the Flow canvas, the Start step is already placed on the canvas.
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Flows can only have one Start step, which cannot be deleted or duplicated.
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Only one step can be connected to the Start step, using an outcome (typically named "Go"). Subsequent steps can however be connected to multiple outcomes. Refer to Outcomes.
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If you are using navigation with multiple unconnected steps to deliver a non-sequential Flow, your first step must still connect to the Start step.