FEM ConstraintPlaneRotation

Description
Creates a FEM multi-point constraint (MPC) for keeping the nodes on a planar surface on the same plane.

Usage

 * 1) There are several ways to invoke the command:
 * 2) * Press the button.
 * 3) * Select the option from the menu.
 * 4) In the 3D view select the object the multi-point constraint should be applied to, which can be a face.

Limitations

 * 1) Plane multi-point constraint can only be applied to a single planar face.
 * 2) When a plane multi-point constraint is applied to the same face as a displacement/fixed boundary condition, the displacement/fixed boundary condition takes precedence.