Add more comments in the dodumentation section explaining how to normalize histograms. Implement suggestion from <http://savannah.cern.ch/bugs/?26673>
Add more comments in the dodumentation section explaining how to normalize histograms.
Implement suggestion from <http://savannah.cern.ch/bugs/?26673>


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@18878 27541ba8-7e3a-0410-8455-c3a389f83636

dawehner/root,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT