In the Flowchart layout, there is an option to have Flatwise edges - that is, edges which are horizontal instead of moving down to the next layer.
	[A]---[B] (flatwise)
	[A]--+
	     |
	    [B] (without flatwise)
	 
	Is there a way to have that functionality in a swimlane? It would make the graph much more compact. I've been using the sketch function, but it would be great to have it automatic.