how to use markdown code example

Example 1: markdown

Markdown is a lightweight markup language with plain-text-formatting syntax,
created in 2004 by John Gruber and Aaron Swartz.
Markdown is often used for formatting readme files,
for writing messages in online discussion forums, 
and to create rich text using a plain text editor.

Example 2: learning markdonw

# This is an <h1> tag
## This is an <h2> tag
###### This is an <h6> tag