# vtk DataFile Version 3.0
vtk output
ASCII
DATASET UNSTRUCTURED_GRID
POINTS 6 float
       0       1	 0.0
       0       0	 0.0
       1       0	 0.0
       0       1	 0.0
       1       0	 0.0
       1       1	 0.0
CELLS 2 8
3	0	1	2	
3	3	4	5	
CELL_TYPES 2
5 
5 
CELL_DATA 2
POINT_DATA 6
SCALARS sol float 2
LOOKUP_TABLE default
-1 1 -1 0 0 -0 0 0 0 0 0 0