<p>In the following example we will im[ple]ment support for <a href="https://help.github.com/articles/github-flavored-markdown#fenced-code-blocks" title="Fenced code block feature of github flavored markdown">fenced code blocks</a> which are part
of the <a href="https://github.com">github flavored markdown</a>.</p>
<p>hey, check <a href="https://github.com/cebe/markdown">this</a>.</p>
<p>ref on end of line <a href="https://github.com/cebe/markdown">this</a>
next line.</p>
<p>this is a <a href="http://example.com">multi
line</a> reference.</p>
<p>this is a <a href="http://example.com">Link
with</a> reference.</p>
<p>[ ]</p>
<p>[not a] reference</p>