Bring back t and f hints in graph. Governed by variable graph.hints. Defaults to True.
Added command # to toggle hints while in graph view.
Use a different style for backedges.
I tried using braille characters, but the result was not good (braille points are a 2x4 table, unfortunately all even numbers, lines were decentered and the visual effect was worse than normal hyphens (-)).
So I ended up using dashed lines for backedges. I think it is the most clear way to differentiate them from both normal edges and conditional edges. Take a look in this screens:
On a different terminal with different font, a conditional backedge:
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