Over the holiday period I wanted to visualize the differences between two editions of a text that I had found to be very different (more on this in the new year). I couldn't find a ready-made solution, so I put together a small piece of software to achieve this: [SankeyVariant](https://github.com/MartinPaulEve/SankeyTextualVariant). The software is based on d3.js and the Sankey plugin and, with the modifications that I have introduced, it allows