I suggest adding a tweak option for each node (both cables and connectors). It has been on mind many times, but was now triggered again by @martinrieder, and I create a new issue to avoid cluttering the original issue where such a feature would be helpful.

@martinrieder wrote:

[...]
My suggestion on this would take some universal approach: allow the tweak to be defined beneath any cable or connector. Their designators could then automatically be referenced, even for auto-generated ones.

I totally agree. It has been on my mind many times since I wrote my suggestion above, but I haven't given priority to diving into the graphviz package to find how to inject my tweak code for each node. Todays tweak code is very simple using search and replace on the total .gv text output from the graphviz package. To do it per node, it will probably require injecting my code earlier in the process, while each node is generated.

Note that it is possible to define multiple subgraphs with the same name. These will be merged by Graphviz, which allows appending designators to clusters.

That I haven't tried. That sounds like very useful in combination with tweak per node. I have been thinking of adding my own per node specifyer for being included into a common group, but what you describe might be a lower hanging fruit.

Originally posted by @kvid in #270 (comment)