570Shapely Manual

http://trac.gispython.org/projects/PCL/wiki/ShapelyManual

It will refer to and quote from the Java Topology Suite (of which GEOS is a port) Technical Specs and the OGC Simple Features Specification for SQL, and explain specifics such as the difference between GEOS's topological operations and the set operations that are standard in Python. It's a work in progress, so bear with me.