DGF
Vertex        % the verticies of the grid
-1   -1       % vertex 0
-0.2 -1       % vertex 1
 1   -1       % vertex 2
 1    -0.6    % vertex 3
 1    1       % vertex 4
-1    1       % vertex 5
0.2  -0.2     % vertex 6
#
CUBE            % a cube grid
0 1 5 6         % cube 0, verticies 0,1,5,6
1 2 6 3         % cube 1
6 3 5 4         % cube 2
#
BOUNDARYSEGMENTS
2   1 2       % between vertex 1,2 use id 2
2   2 3       % between vertex 2,3 use id 2
4   3 4       % between vertex 3,4 use id 4
#
BOUNDARYDOMAIN
default 1     % all other boundary segments have id 1
#
# examplegrid1c.dgf
