Is it an easy way to retrieve a tree/ntuple name?
  I would like to pass a name of the HBOOK ntuple into root generated
  histograms, plots, etc after capplying h2root.
  Regards,
  Michal Lijowski
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Michal Lijowski                  Washington University
Research Associate               St. Louis, MO 63130-4899, USA 
Department of Physics            phone:   314-935-6285
Campus Box 1105                  email:   lijowski@cosray2.wustl.edu
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