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  1. or download this
    #!/usr/bin/perl
use strict; use warnings; use Data::Dumper;
...
  print Dumper($sub);
  &$sub($help);
}
  2. or download this
    package Foo;
use strict; use warnings;
...
}

1;
  3. or download this
    POS: A
$VAR1 = sub { "DUMMY" };
Message is:
POS: B
$VAR1 = sub { "DUMMY" };