Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Preview for New Nodes
PREF_NODE_EDITOR_PREVIEW
Parameter: Grid
PREF_NODE_EDITOR_GRID
Parameter: Navigator
PREF_NODE_EDITOR_NAVIGATOR
Parameter: Info
PREF_NODE_EDITOR_INFO
Parameter: IDs
PREF_NODE_EDITOR_IDS
Parameter: No Value
PREF_NODE_EDITOR_HEATMAP_NOVALUE_COLOR
Parameter: Gradient
PREF_NODE_EDITOR_HEATMAP_GRADIENT