Code and syntax highlighting

Code blocks are part of the Markdown spec, but syntax highlighting isn't. However, many renderers -- like Github's and marked -- support syntax highlighting. Which languages are supported and how those language names should be written will vary from renderer to renderer. marked supports highlighting for dozens of languages (and not-really-languages, like diffs and HTTP headers); to see the complete list, and how to write the language names, see the highlight.js demo page.

Inline `code` has `back-ticks around` it.

Inline code has back-ticks around it.

Blocks of code are either fenced by lines with three back-ticks ```, or are indented with four spaces. I recommend only using the fenced code blocks -- they're easier and only they support syntax highlighting.

```javascript
var isNumber = typeof NaN === "number";
alert(isNumber);
```

```python
s = "Python syntax highlighting"
print s
```

```
<p>When <b>no language</b> is indicated, it tries to detect
the language <i>automatically</i>.</p> 
```

```nohighlight
Omitting highlight is requested, so no syntax highlighting. 
Even if a <b>tag</b> is found.
```

The above markdown fragments produce the following outputs:

var isNumber = typeof NaN === "number";
alert(isNumber);

s = "Python syntax highlighting"
print s

<p>When <b>no language</b> is indicated, it tries to detect
the language <i>automatically</i>.</p> 

Omitting highlight is requested, so no syntax highlighting. 
Even if a <b>tag</b> is found.