Root::RegularFormula Node1 Root::RegularFormula - m_expr + RegularFormula() + RegularFormula() + ~RegularFormula() + RegularFormula() + operator=() + setFormula() + getNPars() + getParNames() - parseExpression() Node2 TFormula Node2->Node1 Node3 std::list< TString > + elements Node3->Node1 -m_par