Maybe these maps and hinges have been misunderstood

The foregoing posting appeared on Joe Clark’s personal Weblog on 2009.09.19 14:52. This presentation was designed for printing and omits components that make sense only onscreen. (If you are seeing this on a screen, then the page stylesheet was not loaded or not loaded properly.) The permanent link is:
https://blog.fawny.org/2009/09/19/mapsandhinges/