[andrewcamel]

Very cool! Could definitely see myself using this. Out of curiosity, what's the visualization library you're using to generate the boxes/lines/zoom in-out canvas? Or is that all native to your app? Building something unrelated and looking for something like this

[__m]

seems to use https://anseki.github.io/leader-line/ for line rendering

[victorsup]

you are correct

[victorsup]

No library, built it from scratch