% DOF
%
% Files
%   dof3BDM1  - dof structure for BDM1 element in 3-D.
%   dof3edge  - dof structure for the lowest order edge elements.
%   dof3face  - dof sturctrue for the lowest order Raviart-Thomas element in 3-D.
%   dof3P2    - dof structure for P2 element in 3-D.
%   dof3RT0   - dof sturctrue for the lowest order face element in 3-D.
%   dofBDM1   - dof structure for BDM1 element
%   dofedge   - dof structure for edges.
%   dofP2     - dof structure for P2 element.
%   dofRT0    - dof structure for the lowest order Ravairt-Thomas element.
%   sortelem3 - sort elem in ascend ordering
