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           Exact Error Result Displays (when available)
                       [incomplete list]
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  Some scripts plot both the finite element node result and exact 
nodal solution and/our the nodal error values:
  contour_exact_err_on_mesh.m
  contour_exact_error.m
  exact_and_fe_1d_graph.m
  exact_error_1d_graph.m
  exact_solution_error.m
  exact_solution_error_shrink.m
  smooth_exact_error_component.m