title: Smart Strong Extension

Smart_Strong
============

Summary
-------

The Smart_Strong extension adds smarter handling of double underscores within
words. This does for double underscores what [smart_emphasis][] does for single
underscores.

The Smart_Strong extension is included in the standard Markdown library.

[smart_emphasis]: ../reference.md#smart_emphasis

Example
-------

```pycon
>>> import markdown
>>> markdown.markdown('Text with double__underscore__words.', extensions=['smart_strong'])
u'<p>Text with double__underscore__words.</p>'
>>> markdown.markdown('__Strong__ still works.', extensions=['smart_strong'])
u'<p><strong>Strong</strong> still works.</p>'
>>> markdown.markdown('__this__works__too__.', extensions=['smart_strong'])
u'<p><strong>this__works__too</strong>.</p>'
```

Usage
-----

See [Extensions](index.md) for general extension usage. Use `smart_strong` as
the name of the extension.

This extension does not accept any special configuration options.