7 October   2025   1:19:36.994 PM      
 
snakes_and_ladders_test():
  Fortran77 version
  Test snakes_and_ladders().
 
TEST01
  SNAKES sets up the snakes and ladders matrix.
  SPY_GE generates a sparsity plot for a matrix stored
  in general (GE) format.
 
  Created sparsity data file "snakes_data.txt".
  Created graphics command file "snakes_commands.txt".
 
snakes_and_ladders_test():
  Normal end of execution.
 
 7 October   2025   1:19:36.994 PM