I experimented a bit with Graphviz. This is what the internal routing of Zrythm looks like.
It is now possible to export such a graph in PNG or .dot graph format. Here is a short demo:
That is cool, but why would anyone need that? 
I need it. I use it all the time for debugging. saved me lots of time. also makes it useful for potential contributors to understand the internals
Ah, I see! It didn’t occur to me that it could be a useful development / debugging tool!
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The graph image doesn’t open… Can you re-upload it?