Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Legacy Keyframe Dots
PREF_TL_KEYFRAMEDOTSParameter: Remove Tracks Without Keyframes
PREF_TL_DOTSKILLTRACKSParameter: Cursor Indicator
PREF_TL_INDICATORParameter: Interactive Update
PREF_TL_INTERACTIVEParameter: Highlight
PREF_TL_HIGHLIGHTParameter: Track Color
PREF_TL_TRACKCOLParameter: Link Key/F-Curve Selection
PREF_TL_LINKKEYFCSELECTIONParameter: OM Single Object Linking
PREF_TL_LINKOMSELECTONLYParameter: OM Single Object Linking but displays the tags
PREF_TL_LINKOMSELECTONLYBUTTAGSParameter: Show Branches
PREF_TL_SHOWBRANCHESParameter: Show Vector Track
PREF_TL_SHOWVECTORParameter: F-Curve List View
PREF_TL_FCLISTVIEW_HIERARCHICALParameter: F-Curve Non-Hierarchical List View
PREF_TL_FCLISTVIEWParameter: Summary Track
PREF_TL_SUMMARYParameter: Track Start/End
PREF_TL_TRACKSTARTENDParameter: Draw Keys on Cells
PREF_TL_DOPESHEETParameter: Show Key Symbols
PREF_TL_KEYSYMBOLSParameter: Layer Colors
PREF_TL_LAYERCOLParameter: Minimum Key Width
PREF_TL_KEYWIDTHVALUEParameter: Reduced Modification Value
PREF_TL_RMREDUCTIONParameter: Motion Clip Transition Time
PREF_TL_MOTION