smootherAll.xml        -- global parameters should not be touched
smootherList.xml       -- existing sublist should be kept

smootherLvl.xml        -- level specific parameters should be turned into sublist
smootherLvl2.xml       -- same example with two level
smootherLvl2-2.xml     -- same example with two level and two parameters each

smootherMixed.xml      -- mixing level specific parameters and parameters sublist
smootherMixed2.xml     -- same example switching order of parameters
