# phpman > ri > RDoc::Extend

## [RDoc::Extend](https://www.chedong.com/phpMan.php/perldoc/RDoc%3A%3AExtend/markdown) < [RDoc::Mixin](https://www.chedong.com/phpMan.php/perldoc/RDoc%3A%3AMixin/markdown)

(from gem rdoc-7.2.0)
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A Module extension to a class with #extend

  [RDoc::Extend](https://www.chedong.com/phpMan.php/perldoc/RDoc%3A%3AExtend/markdown).new 'Enumerable', 'comment ...'
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