Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Reset on Frame 0
OEPYTHON_RESETParameter: Time Dependent
OEPYTHON_FRAMEParameter: Camera Dependent
OEPYTHON_CAMERADEPENDENTParameter: Mode
OEPYTHON_MODEParameter: Code
OEPYTHON_STRINGParameter: Open Python Editor
OEPYTHON_OPENEDITOR