If set to GET or POST, then the parsed query arguments
(GET or POST data) will be used. This setting is useful, if you use
URL processing extensions like Real URL, which translate part of the
path into query arguments.
It's also possible to get both, POST and GET data, on setting this to
"POST,GET" or "GET,POST". The last method in this sequence takes
precedence and overwrites the parts that are also present for the