You could just draw the sequence structure around the code. That wil autocreate the tunnels for you.
Thanks, that works. Also, is there a way to say, select an object or wire on the block diagram, and delete everything that is connected to it?
You can triple-click a wire to select all of the branches, then delete it, but that won't select all of the things it's connected to.
You can also select object(s), right-click, then select "Remove and rewire".
Not 100% sure that covers what you were asking to do though. Your wording seems a bit ambiguous.