Hi
I am trying to work with the HistFactory and if I understand correclty
The prepareHistFactory prepares a working area by creating results/, data/ and config/ directories. It also makes the data/example.root which could be used as input for the xml . So
-Is there any tutorial / script to be used in order to make/create my .root files ?
-In general, can be any format be used as input, or one needs to stick with the example-like one?
-Also , is really difficult to follow this tutorials
as the description on the right for each one is not appropriate I think 
Thanks in advance
-a