Thx. It seems the "nice design" is just removing the bubbles + making edges bold: digraph genealogy { graph [charset="utf-8"]; node [shape=

Thx. It seems the "nice design" is just removing the bubbles + making edges bold: digraph genealogy { graph [charset="utf-8"]; node [shape=plaintext]; edge [style=bold]; ... I definitely like it better than the default bubbles digraph.