Reimplemented in Expression, Ramm, AICN, Newton, WilsonPenzienNewmark, Tchamwa, OALTS, NonviscousNewmark, Newmark, LeeNewmarkIterative, LeeNewmarkFull, LeeNewmark, GSSSS, GeneralizedAlphaExplicit, GeneralizedAlpha, BatheTwoStep, BatheExplicit, FEAST, BFGS, Arnoldi, Cell3DOS, SectionNM, NM3D1, NM2D1, Rectangle3D, ISection3D, CircularHollow3D, Circle3D, Cell3D, Box3D, Rectangle2D, ISection2D, HSection2D, CircularHollow2D, Circle2D, Cell2D, Box2D, TrussSection, Rectangle1D, Circle1D, Fibre, VisualisationRecorder, SumRecorder, Recorder, NodeRecorder, GroupSumRecorder, GroupNodeRecorder, GroupElementRecorder, GlobalStiffnessRecorder, GlobalRecorder, GlobalMassRecorder, FrameRecorder, ElementRecorder, EigenRecorder, AmplitudeRecorder, OS146S, UniversalOS, ElasticOS, Substepping, Stacked, VAFCRP, PolyJ2, NonlinearPeric, NonlinearJ2, NonlinearGurson, MultilinearJ2, ExpJ2, ExpGurson, CustomJ2, CustomGurson, BilinearJ2, ArmstrongFrederick, SimpleSand, DafaliasManzari, TimberPD, NonlinearHoffman, CustomHoffman, Yeoh, OrthotropicElastic3D, MooneyRivlin, IsotropicNonlinearElastic3D, IsotropicElastic3D, BlatzKo, NonlinearDruckerPrager, ExpDP, CustomDP, BilinearDP, NonlinearCDP, CDPM2, ParabolicCC, ExpCC, CustomCC, BilinearCC, Rotation2D, Rebar2D, PlaneStress, PlaneStrain, Laminated, Axisymmetric, Elastic2D, AxisymmetricElastic, Concrete22, Concrete21, Uniaxial, Sequential, Parallel, VAFCRP1D, MultilinearMises1D, ExpGurson1D, CustomGurson1D, Bilinear1D, ArmstrongFrederick1D, Nonviscous01, NonlinearViscosity, Maxwell, Kelvin, Material1D, Trivial, SteelBRB, SlipLock, RambergOsgood, PeakOriented, MultilinearPO, MultilinearOO, MPF, Gap01, Flag, CoulombFriction, BWBN, BoucWen, BilinearPO, BilinearOO, AFC, Tanh1D, Sinh1D, PolyElastic1D, MultilinearElastic1D, Elastic1D, CustomElastic1D, BilinearElastic1D, AsymmElastic1D, NonlinearK4, ConcreteCM, TabularSpline, Tabular, Sine, Ramp, NZStrongMotion, Modulated, Linear, Decay, CustomAmplitude, Cosine, Constant, Combine, T3D2S, T3D2, T2D2S, T2D2, Spring02, Spring01, SingleSection3D, SingleSection2D, MassBase, Joint, Damper02, Damper01, SGCMS, S4, DKTS3, Mindlin, DKT4, DKT3, PatchQuad, PatchCube, PCPE8UC, PCPE8DC, PCPE4UC, PCPE4DC, CP8, CP7, CP6, CP5, CP4I, CP4, CP3, DCP4, DCP3, QE2, PS, CINP4, SGCMQ, GQ12, GCMQ, Allman, CSMT6, CSMT3, CSMQ8, CSMQ4, CSMQ, CAX8, CAX4, CAX3, DC3D8, DC3D4, CIN3D8, C3D8I, C3D8, C3D4, C3D20, NMB31, NMB21, MVLEM, F31, F21H, F21, EB31OS, EB21, B31OS, B31, B21H, B21, Node, Group, ElementGroup, SectionExample, MaterialExample, and ElementExample.
1.9.1