Reduce confusion about which way to read labels

[keyserj]

Is your feature request related to a problem? Please describe. When trying to read edge labels for the first time, it's natural to try to read top-to-bottom, which is wrong and confusing. There are arrows for the direction of the relations, but these may not be clear enough, or it might not be obvious that they imply reading direction.

Describe the solution you'd like ?

Describe alternatives you've considered ideas:

• increase size of arrows
• put solutions on top and problems on bottom (may feel less natural, since we usually start from a problem?)
• re-word relations to actually read top-to-bottom, and change the arrow direction (e.g. "problem addressed by solution")

Additional context

Technical ideas

[keyserj]

probably would be good to allow user to config the direction they'd like:

• problems on top, solutions on bottom, edges reading upwards
• problems on top, solutions on bottom, edges reading downwards
• solutions on top, problems on bottom, edges reading upwards
• solutions on top, problems on bottom, edges reading downwards