Markdown Here Cheatsheet
Source

0.1

Headers

H1

H2

H3

H4

H5
H6

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

Alt-H1

Alt-H2
------

0.2

Emphasis

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.

0.3

Lists

  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.

    Some text that should be aligned with the above item.

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

0.4

Links

I'm an inline-style link

I'm a reference-style link

You can use numbers for reference-style link definitions

Or leave it empty and use the link text itself

URLs and URLs in angle brackets will automatically get turned into links.
http://www.example.com or http://www.example.com and sometimes
example.com (but not on Github, for example).

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

0.5

Images

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

Inline-style:
alt text

Reference-style:
alt text

0.6

Code and 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>.

0.7

Tables

Colons can be used to align columns.

Tables Are Cool
col 3 is right-aligned $1600
col 2 is centered $12
zebra stripes are neat $1

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

Markdown Less Pretty
Still renders nicely
1 2 3

0.8

Inline HTML

Definition list
Is something people use sometimes.
Markdown in HTML
Does *not* work **very** well. Use HTML tags.

0.9

Horizontal Rule

Three or more...


Hyphens


Asterisks


Underscores

0.9

Horizontal Rule

Three or more...


Hyphens


Asterisks


Underscores

0.10

YouTube Videos

<img src="http://img.youtube.com/vi/_QdPW8JrYzQ/0.jpg"
alt="IMAGE ALT TEXT HERE" width="240" height="180" border="10" />

Or, in pure Markdown, but losing the image sizing and border:

IMAGE ALT TEXT HERE