In the Properties view, select the call flow to call.
A combo box will list all of the sub flows in the project.
Cannot select main.flow; sub flows cannot select themselves.
When a sub flow is selected, the return points are added to the node.
Each return point is used to draw the flow to the next node when returning from the sub flow.
Return points are added, renamed or removed when changed in the sub flow.
Multiple return points allow you to return back from a sub flow and execute different parts of the calling flow depending on the return point that was used.
