test()           # function
Module::test()   # function
$obj->test()     # virtual instance method
$class->test()   # static method

##</code><code>##

test($obj)         # From within the object that defines test().
  -or-
Class::test($obj)  # From anywhere.

##</code><code>##

$obj->Class::test()
$class->Class::test()
$obj->SUPER::test()
$class->SUPER::test()

##</code><code>##

sub eg { $_[0]->test($_[1]); }
sub eg { One::test(@_); }
sub eg { Two->test($_[1]); }
sub eg { One->test($_[1]); }