markdown syntax

这是一个标题。

1. 这是第一行列表项。

2. 这是第二行列表项。

3. A list item with a blockquote:

   This is a blockquote inside a list item.

给出一些例子代码:

> return shell_exec("echo $input | $markdown_script");

This link has no title attribute.

This is [an example] [id] reference-style link. [id]: http://example.com/ "Optional Title Here"

single underscores

double underscores

GitHub用"GitHub Flavored Markdown"

Mistaken text.

x = 0
x = 2 + 2
what is x