Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: MATERIAL_PAGE_PROPERTIES
MATERIAL_PAGE_PROPERTIES
Parameter: Render Objects
PSIMF_RENDOBJ
Parameter: Render Hidden Objects
PSIMF_RENDHOBJ
Parameter: Render Mode
PSIMF_RENDMODE
Parameter: World Step Size
PSIMF_STEP
Parameter: Ray Trans. Limit
PSIMF_LIMIT
Parameter: ShadowMap Step Size
PSIMF_MAPSTEP
Parameter: ShadowMap Trans. Limit
PSIMF_MAPLIMIT
Parameter: Raytraced Step Size
PSIMF_SHADSTEP
Parameter: Raytraced Trans. Limit
PSIMF_SHADLIMIT
Parameter: RayTrans. Correction
PSIMF_RTCORRECT
Parameter: Volume Light
PSIMF_VOLFILTER