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  1. or download this
    #!/usr/bin/perl
    use strict;
    use warnings 'all';
    ...
    print $stdout, "***End***\n";
    
    # CLEANup should follow
    
  2. or download this
    Scalar value @_[0] better written as $_[0] at .../Safe/World/ScanPack.
    +pm line 88.
    Scalar value @_[0] better written as $_[0] at .../Safe/World.pm line 3
    +45.
    Useless use of hash element in void context at .../Safe/World.pm line 
    +1007.
    ...
    Use of uninitialized value in numeric ne (!=) at .../Safe/World.pm lin
    +e 386.
    Use of uninitialized value in string ne at .../Safe/World/stdout.pm li
    +ne 218.
    Use of uninitialized value in string ne at .../Safe/World/stdout.pm li
    +ne 218.