package My::Package;
use strict;

use vars qw( $VERSION );
$VERSION = 0.01;

# If you inherit from some other module (use sparingly):
#use base qw( ... );

##</code><code>##

package My::Package;
use strict;

use vars qw( $VERSION @ISA );
BEGIN {
    $VERSION = 0.01;
    @ISA = qw( ... );
}

##</code><code>##

package My::Module;
use strict;

use vars qw( $VERSION @EXPORT_OK %EXPORT_TAGS );
BEGIN {
    $VERSION     = 0.01;
    @EXPORT_OK   = qw( ... );
    %EXPORT_TAGS = ( ... );
    require Exporter;
    *import = \&Exporter::import;
}