Title1

Title2

  # Title1
  ## Title2

Italic

Bold

  *Italic*

  **Bold**

Ref1

Ref2 Ref3

> Ref1
> 
> Ref2
> Ref3

  * List1
  * List2

print("hello world")

  ```python
  print("hello world")
  ```

---

This is a simplest link to http://www.google.com/ncr.

  This is a simplest link to <http://www.google.com/ncr>.

This is a link to google company.

This is a [link to google][google] company.
[google]: http://www.google.com "Click to go"

This is an image

This is an image ![Alt test][tank]
[tank]:https://www.python.org/static/img/python-logo.png "Python"