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  1. or download this
    perl -e 'use P;
my $x=27;
...
P $y,"through STDOUT=%s", $x'
27
through STDOUT=27
  2. or download this
    P $x
   #and 
P STDOUT $x    #without the comma
  3. or download this
    # perl -e 'use P;
P \*STDOUT, "Input was: %s", \*STDIN;      
...
my input
Input was: <*=my input
>