Map
Every article is a node. Two articles are joined when they share a subject, and the line is heavier the more subjects they share. 58 articles, 216 connections.
Drag to move around, scroll or pinch to zoom, and click an article to open it.
Wherever the pointer is, the map either opens that neighbourhood out so a crowded corner can be read, or draws it together so you can see what belongs with what. The two are exact opposites of one another.