Ah, I can understand that the diagrammer view would trigger printing requests.
I haven't had the need to print any of my Flows yet, but if there would be a reason for doing so, I can speculate some around what I think would be a useful implementation.
First thing that comes to mind is a very simple implementation, it would print all things in the main canvas only (trigger, actions, flow logic, and the error handler section).
Data panel and such might be a bit excessive in my opinion.
Maybe you could have an "advanced" toggle, to print the Flow, but with all actions (and trigger) expanded, but if I'm to guess, the majority of the print requests would be to have an overview of the Flow, so then details are overkill.
