It has been requested that a README file that describes what all the environment variables are doing be created. This would be nice even for the core framework developers who dont know what some of these variables do.
These need a big cleanup. To document what is there would be a mess.
That does not reduce the need for this. We should probably start with a short list of
relevant variables. Issue still open.
There are still a few cases left where environment variables are more complex than they should be. This will remain open until at least one more pass at reducing this complexity is done.