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###His code
$GlobalName = "Clinton";
...
$ref = \&getGlobalName();
$$ref = "Gore";
print "After: " . &getGlobalName() . "\n";

###His code improved

...
print "Before: " . &getGlobalName() . "\n";
$GlobalName = "Gore";
print "After: " . &getGlobalName() . "\n";

$ref = \&getGlobalName();

print "$ref \n";

CODE(0x1a45934)

${CODE(0x1a45934)} = "Gore"