function grf_display_test ( )

%*****************************************************************************80
%
%% GRF_DISPLAY_TEST tests GRF_DISPLAY.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license. 
%
%  Modified:
%
%    25 January 2019
%
%  Author:
%
%    John Burkardt
%
  addpath ( '../grf_display' );

  timestamp ( );
  fprintf ( 1, '\n' );
  fprintf ( 1, 'GRFL_DISPLAY_TEST:\n' );
  fprintf ( 1, '  MATLAB version.\n' );
  fprintf ( 1, '  Test GRF_DISPLAY.\n' );

  grf_display ( 'coxeter' );
  grf_display ( 'disconnected' );
  grf_display ( 'mst' );
  grf_display ( 'simple' );
  grf_display ( 'tsp' );
%
%  Terminate.
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'GRF_DISPLAY_TEST:\n' );
  fprintf ( 1, '  Normal end of execution.\n' );
  fprintf ( 1, '\n' );
  timestamp ( );

  rmpath ( '../grf_display' );

  return
end
