Rigid body dynamics in Discover available

BS 2015-01-30

I read the other discussion thread that saying it is not possible to carry out rigid body dynamics in Forcite and Forcite Plus module.

But leaflet of DISCOVER says...

Molecular Mechanics and Dynamics

-Energy minimization of flexible geometries with a choice of optimizers, including steepest descents, conjugate gradients, quasi-Newton, Newton, and truncated-Newton methods

-Microcanonical (NVE), canonical (NVT), constant pressure (NPT), and constant enthalpy (NPH) molecular dynamics simulations

-Simulations using periodic boundary conditions supporting bonds across boundaries and full symmetry in the case of energy minimization

-Constraining selected atoms during a simulation.

Does this mean molecular dynamics with constraining some atoms available in Discover module? Or is it available only within Molecular Machanics?