1. 'algorithm' is done for now (2 classes have too many external dependencies and would be done later) 2. From 23/08: "Decided to include 'geos.h' everywhere as a place to make adjustments for different compilers." Found out that it is not necessary. 'platform.h' already performs the same function 3. Total time: 15:00 Next to port: 'operation/relate' Yury