Markdown是一种可以使用普通文本编辑器编写的标记语言，通过类似HTML的标记语法，它可以使普通文本内容具有一定的格式。
Markdown具有一系列衍生版本，用于扩展Markdown的功能（如表格、脚注、内嵌HTML等等），这些功能原初的Markdown尚不具备，它们能让Markdown转换成更多的格式，例如LaTeX，Docbook。Markdown增强版中比较有名的有Markdown Extra、MultiMarkdown、 Maruku等。这些衍生版本要么基于工具，如Pandoc；要么基于网站，如GitHub和Wikipedia，在语法上基本兼容，但在换行等细节上也有改动。
最常见的Markdown格式选项和键盘快捷键:
| 输出后的效果 | Markdown | 快捷键 | |
|---|---|---|---|
| Bold | text | Ctrl/⌘ + B | |
| Emphasize | text | Ctrl/⌘ + I | |
| Strike-through | Ctrl + Alt + U | ||
| Link | title | Ctrl/⌘ + K | |
| Inline | Code code
|
Ctrl/⌘ + Shift + K | |
| Image | alt
|
Ctrl/⌘ + Shift + I | |
| List | * item | Ctrl + L | |
| Blockquote | > quote | Ctrl + Q | |
| H1 | # Heading | ||
| H2 | ## Heading | Ctrl/⌘ + H | |
| H3 | ### Heading | Ctrl/⌘ + H (x2) |
下面是一些例子：
Paragraphs
On July 2, an alien mothership entered Earth's orbit and deployed several dozen saucer-shaped "destroyer" spacecraft, each 15 miles (24 km) wide.
On July 3, the Black Knights, a squadron of Marine Corps F/A-18 Hornets, participated in an assault on a destroyer near the city of Los Angeles.
Headings
使用 "#"
# The largest heading (an <h1> tag)
## The second largest heading (an <h2> tag)
…
###### The 6th largest heading (an <h6> tag)
Blockquotes
使用 ">"
In the words of Abraham Lincoln:
Pardon my french
Styling text
- 加粗: *xxx*
- 斜体: _xxx_
- 删除线: ~xxx~
eg:
Everyone must attend the meeting at 5 o'clock today
Lists
使用: * 或 - 或 1，2，3...
eg:
- 嵌套列表
- 嵌套列表
Task Lists
使用：- [x] do something
- [x] exersice one
- [ ] exersice two
Code Formartting
inline formats: `
Here's an idea: why don't we take SuperiorProject and turn it into **Reasonable**Project.
Multiple formats: ```
Check out this neat program I wrote:
x = 0
x = 2 + 2
what is x
Links
使用: [link tag](link url)
Images
使用：
[站外图片上传中……(2)]
Tables
| First Header | Second Header |
|---|---|
| Content from cell 1 | Content from cell 2 |
| Content in the first column | Content in the second column |
| Left-Aligned | Center Aligned | Right Aligned |
|---|---|---|
| col 3 is | some wordy text | $1600 |
| col 2 is | centered | $12 |
| zebra stripes | are neat | $1 |
