Pythia8::GravFlat Node1 Pythia8::GravFlat + GravFlat() + canModifySigma() + multiplySigmaBy() Node2 UserHooks Node2->Node1 Node3 Pythia8_UserHooks:: UserSetting< int > # m_param # m_settingsPtr # m_retrieved + UserSetting() + operator()() - uncachedRetrieve() - uncachedRetrieve() - uncachedRetrieve() - uncachedRetrieve() - uncachedRetrieve() Node3->Node1 -m_energyMode Node4 std::string Node4->Node3 #m_paramName Node6 Pythia8_UserHooks:: UserSetting< bool > # m_param # m_settingsPtr # m_retrieved + UserSetting() + operator()() - uncachedRetrieve() - uncachedRetrieve() - uncachedRetrieve() - uncachedRetrieve() - uncachedRetrieve() Node4->Node6 #m_paramName Node5 std::basic_string< char > Node5->Node4 Node6->Node1 -m_flatpT