# phpman > perldoc > Class::MOP::Module

## NAME
    [Class::MOP::Module](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3AModule/markdown) - Module Meta Object

## VERSION
    version 2.2200

## DESCRIPTION
    A module is essentially a [Class::MOP::Package](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3APackage/markdown) with metadata, in our case the version and
    authority.

## INHERITANCE
    [Class::MOP::Module](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3AModule/markdown) is a subclass of [Class::MOP::Package](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3APackage/markdown).

## METHODS
  [Class::MOP::Module](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3AModule/markdown)->create($package, %options)
    Overrides "create" from [Class::MOP::Package](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3APackage/markdown) to provide these additional options:

    "version"
        A version number, to be installed in the $VERSION package global variable.

    "authority"
        An authority, to be installed in the $AUTHORITY package global variable.

        This is a legacy field and its use is not recommended.

  $metamodule->version
    This is a read-only attribute which returns the $VERSION of the package, if one exists.

  $metamodule->authority
    This is a read-only attribute which returns the $AUTHORITY of the package, if one exists.

  $metamodule->identifier
    This constructs a string which combines the name, version and authority.

  [Class::MOP::Module](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3AModule/markdown)->meta
    This will return a [Class::MOP::Class](https://www.chedong.com/phpMan.php/perldoc/Class%3A%3AMOP%3A%3AClass/markdown) instance for this class.

## AUTHORS
    *   Stevan Little <<stevan@cpan.org>>

    *   Dave Rolsky <<autarch@urth.org>>

    *   Jesse Luehrs <<doy@cpan.org>>

    *   Shawn M Moore <<sartak@cpan.org>>

    *   יובל קוג'מן (Yuval Kogman) <<nothingmuch@woobling.org>>

    *   Karen Etheridge <<ether@cpan.org>>

    *   Florian Ragwitz <<rafl@debian.org>>

    *   Hans Dieter Pearcey <<hdp@cpan.org>>

    *   Chris Prather <<chris@prather.org>>

    *   Matt S Trout <<mstrout@cpan.org>>

## COPYRIGHT AND LICENSE
    This software is copyright (c) 2006 by Infinity Interactive, Inc.

    This is free software; you can redistribute it and/or modify it under the same terms as the Perl
    5 programming language system itself.