.TRANSFORM.Nuclear.ReactorKinetics.SparseMatrix.PointKinetics_L1_atomBased_external_sparseMatrix.Data .TRANSFORM.Nuclear.ReactorKinetics.SparseMatrix.PointKinetics_L1_atomBased_external_sparseMatrix.Datarecord Data = TRANSFORM.Nuclear.ReactorKinetics.Data.PrecursorGroups.precursorGroups_6_TRACEdefault;