function($param1, \%param2);

##</code><code>##

sub function {
    if ($_[0] == 1) {
        do_something();
    }
    else {
        do_something_else();
    }
}

##</code><code>##

my @list = keys %{ $href->{thing} };

##</code><code>##

my $thing = $hash{one}->{two};
my $other = $href->{one};

##</code><code>##

package Blah;
...
1;

=head1 NAME
Blah - The thing with the guy and the place
...

##</code><code>##

=head2 method($param)

Contemplates the reason for life, using common sense as a modifier.

    my $explanation = My::Continuity->new;

    my $thing = 'Reason for living';

    my $reasoning = $explanation->method($thing);

I<Parameters>:

    $param

I<Mandatory, String>: The explanation of the formation of humanity in a single string.

I<Return>: Hash reference, where each key is a continent, and its value is a colour. C<croak>s on failure.