Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Save Selected
ALLPLAN_SELECTEDParameter: Triangulate
ALLPLAN_TRIParameter: Optimize
ALLPLAN_OTPIMIZEParameter: Optimize Tolerance
ALLPLAN_OPTIMIZEVALUEParameter: Clear Degenerated Polygons
ALLPLAN_COLLAPSEDParameter: Color
ALLPLAN_COLORParameter: Small Format
ALLPLAN_KOMPRIMIERTParameter: Create Log File
ALLPLAN_INFO