The contents of all versions are summarized in table below:
 

    Full version(2D) Flow version(2D) Single-phase(2D) Full version(3D)
Medium Single phase   ON ON ON ON
  Two phase   ON OFF
ON
ON
Analysis modes Plane-strain   ON ON
ON
ON
  Axisymmetry   ON ON
ON
ON
  3D   OFF OFF
OFF
ON
Analysis types Deformation  Total/Effective stress analysis ON OFF
ON
ON
  Flow Steady state/transient ON ON
OFF
ON
  Deformation+flow (uncoupled)  Total stress analysis ON OFF
It is possible to 
introduce 
the initial pore 
pressures 
ON
Deformation+flow (coupled) Consolidation ON OFF
OFF
ON
  Heat transfer Steady state/transient
(can generate an input for further mechanical analysis)		 ON OFF
OFF
ON
Humidity transfer Steady state/transient
(can generate an input for further mechanical analysis)		 OFF OFF OFF ON
  Stability 
(local/global)		 c,phi reduction 
c reduction
stress level based		 ON OFF
ON
ON
Finite elements Continuum-2D elements:
Q4-BBAR, Q4-EAS, T3		 ON ON
ON
ON
Continuum-3D elements:
B8-BBAR
B8-EAS
W6 (standard)
TH4(standard)
OFF
OFF
OFF
ON
  Truss (linear/nonlinear)-2D element : L2 ON OFF
ON
 
ON
Truss (linear/nonlinear)-3D element : L2
OFF
OFF
OFF
ON
  Beams (linear/nonlinear)-2D element : L2 ON OFF
ON
ON
  Membranes (linear/nonlinear)-2D element : L2 ON OFF
ON
ON
Membranes (linear/nonlinear)-3D elements: Q4, T3
OFF
OFF
OFF
ON
  Farfield-2D  infinite mapped element Q4 ON OFF
ON
ON
Farfield-3D  infinite mapped element B8
OFF
OFF
OFF
ON
  Contact-2D element : L2 x 2 ON ON
ON
ON
Contact-3D elements: Q4 x 2, 
                  T3 x 2
OFF
OFF
OFF
ON
Soil/rock models Isotropic elasticity   ON ON
ON
ON
  Multilaminate (max. 3 weakness planes) ON OFF
ON
ON
  Mohr-Coulomb+Rankine cut-off exact criterion ON OFF
ON
ON
  Mohr-Coulomb (MW) smooth M-C surface based on Menetrey-Willam criterion ON OFF
ON
ON
  Mohr-Coulomb (MW)+Multilaminate smooth M-C surface based on Menetrey-Willam criterion ON OFF
ON
ON
  Rankine (MW) smooth surface based on Menetrey-Willam criterion ON OFF
ON
ON
  Drucker-Prager  with different adjustments to M-C ON OFF
ON
ON
  Cap elliptic cap+Drucker-Prager ON OFF
ON
ON
  Hoek-Brown smooth surface based on Menetrey-Willam criterion + [softening] ON OFF
ON
ON
Other options Creep (linear) Exponential  law
Power law
Hyperbolic law
Logarithmic law		 ON OFF
ON
ON