Improve class-docs: - document usage of SetDigitId(TObject*); - document ownership and function SetOwnIds(Bool_t); - point to TRef documentation about ObjectNumber.
Improve class-docs:
- document usage of SetDigitId(TObject*);
- document ownership and function SetOwnIds(Bool_t);
- point to TRef documentation about ObjectNumber.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@32116 27541ba8-7e3a-0410-8455-c3a389f83636

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