短代码演示：

cd
内嵌代码
粗体
斜体

相册短代码

图集

H1

H2

H3

H4

H5

H6

Alternatively, for H1 and H2, an underline-ish style:

Alt-H1

Alt-H2

Emphasis, aka italics, with asterisks or _underscores_.

Strong emphasis, aka bold, with asterisks or __underscores__.

Combined emphasis with asterisks and underscores.

Strikethrough uses two tildes. Scratch this.

1. First ordered list item
2. Another item
   ⋅⋅* Unordered sub-list.
3. Actual numbers don't matter, just that it's a number
   ⋅⋅1. Ordered sub-list
4. And another item.

⋅⋅⋅You can have properly indented paragraphs within list items. Notice the blank line above, and the leading spaces (at least one, but we'll use three here to also align the raw Markdown).

⋅⋅⋅To have a line break without a paragraph, you will need to use two trailing spaces.⋅⋅
⋅⋅⋅Note that this line is separate, but within the same paragraph.⋅⋅
⋅⋅⋅(This is contrary to the typical GFM line break behaviour, where trailing spaces are not required.)

• Unordered list can use asterisks
• Or minuses
• Or pluses

I'm an inline-style link

I'm an inline-style link with title

I'm a reference-style link

I'm a relative reference to a repository file

You can use numbers for reference-style link definitions

Or leave it empty and use the [link text itself]

Some text to show that the reference links can follow later.

Here's our logo (hover to see the title text):

Inline-style:

Reference-style:

Inline code has back-ticks around it.

var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
alert(s);

var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
var s = "JavaScript syntax highlighting";
alert(s);

s = "Python syntax highlighting"
print s

No language indicated, so no syntax highlighting.
But let's throw in a <b>tag</b>.

Colons can be used to align columns.

The outer pipes (|) are optional, and you don't need to make the raw Markdown line up prettily. You can also use inline Markdown.

Blockquotes are very handy in email to emulate reply text.
This line is part of the same quote.

Quote break.

This is a very long line that will still be quoted properly when it wraps. Oh boy let's keep writing to make sure this is long enough to actually wrap for everyone. Oh, you can put Markdown into a blockquote.

Definition list

Is something people use sometimes.

Markdown in HTML

Does *not* work **very** well. Use HTML tags.

Three or more...

Hyphens

Asterisks

_

Underscores

Here's a line for us to start with.

This line is separated from the one above by two newlines, so it will be a separate paragraph.

This line is also a separate paragraph, but...
This line is only separated by a single newline, so it's a separate line in the same paragraph.