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  1. or download this
    #!/usr/bin/env perl -l
    
    ...
    
    print '*** AFTER ***';
    print $string;
    
  2. or download this
    *** BEFORE ***
         is a TAB
    ...
    isaTAB
    isaSPACE
    TABandSPACE
    
  3. or download this
    #!/usr/bin/env perl -l
    
    ...
    
    print '*** AFTER ***';
    print $string;
    
  4. or download this
    *** BEFORE ***
         is a TAB
    ...
    isaTAB
    isaSPACE
    TABandSPACE