Ghoul is a part of the Trōhēnnu project intended to output graphs/plots that will show both language divergence and convergence. In theory, any sort of shared innovation can be represented by this, but we'll stick with sound change for conceptual ease at the moment.
What Ghoul should do
- Show divergence
- Tree-like splits
- Show convergence
- Ideally by tube-plots with shared rings (i.e., touching/merged tubes)