Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Quaternion Interpolation
ID_CKEY_QUAT_INTER
Parameter: Type
ID_CKEY_INTER
Parameter: Mute
ID_VKEY_MUTE
Parameter: Key Time
ID_VKEY_TIME
Parameter: Key Value
ID_CKEY_VALUE
Parameter: Lock Time
ID_VKEY_LOCK_T
Parameter: Lock Value
ID_CKEY_LOCK_V
Parameter: Breakdown
ID_VKEY_BREAKDOWN
Parameter: Breakdown Color
ID_VKEY_BREAKDOWNCOLOR
Parameter: Tangent Preset
ID_CKEY_PRESET
Parameter: Auto Tangents
ID_CKEY_AUTO
Parameter: Clamp
ID_CKEY_CLAMP
Parameter: Angle
ID_CKEY_AUTOMODE
Parameter: Remove Overshooting
ID_CKEY_REMOVEOVERSHOOT
Parameter: Weighted Tangent
ID_CKEY_WEIGHTEDTANGENT
Parameter: Automatic Weighting
ID_CKEY_AUTOWEIGHT
Parameter: Left Time
ID_CKEY_TIME_LEFT
Parameter: Right Time
ID_CKEY_TIME_RIGHT
Parameter: Left Value
ID_CKEY_VALUE_LEFT
Parameter: Right Value
ID_CKEY_VALUE_RIGHT
Parameter: Lock Tangent Angles
ID_CKEY_LOCK_O
Parameter: Lock Tangent Lengths
ID_CKEY_LOCK_L
Parameter: Break Tangents
ID_CKEY_BREAK
Parameter: Keep Visual Angle
ID_CKEY_KEEPVISUALANGLE