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  1. or download this
        use strict;
    use warnings;
...

    CProcess->PrintProcessInfo("perl.exe");
  2. or download this
    use strict;
use warnings;
...
require Tk::MainWindow;
require 5.000;
require Exporter;
  3. or download this
    require B;

...
    my $otherref = $anon;

    my $refcount =  B::svref_2object($anon)->REFCNT(); # => 2