...The Lesson also gives the Microbiology used in the simulation. It is coded in vb.net in MS Visual Studio 2022 Please note: After downloading and running the CheStatGen2b.exe file, also run the Setup file in the c:\Users\Public\CheStatGen2b directory. The 2a version has been updated to 2b. 2b has improved Graphs. The APP to runs under Windows 10. Download CheStatWH2aSETUP.exe gives a Width to Height ratio of 100 to 1000 in the Visual Simulations.