title: Where is GitHub Flavored Markdown (GFM) actually used in GitHub?
body: <p>This has been a mystery to me for a while, and for some reason Google didn't help me, so let me ask. </p>
  
  <p>EDIT: ok, I understand the GFM is everywhere in GitHub, and why GFM style line break edit is not available?? Is it turned off? and I know the original MD rule. <strong>What I'd like to confirm here is GFM line break rule.</strong> Thank you.</p>
  
  <p><strong>I like GFM very much especially for the straightfoward line break manner.
  <a href="https://help.github.com/articles/github-flavored-markdown" rel="noreferrer">https://help.github.com/articles/github-flavored-markdown</a>
  However, I have been never able to post my own Markdown with this line beak mode.</strong></p>
  
  <p>For instance, I copied some syntax list MD to a new page of one of my wiki on GitHub.</p>
  
  <p><a href="https://github.com/kenokabe/kenokabe.github.io/wiki/MarkDownGFM" rel="noreferrer">https://github.com/kenokabe/kenokabe.github.io/wiki/MarkDownGFM</a></p>
  
  <p>As you can confirm the MD source. </p>
  
  <pre><code>This is intended as a quick reference and showcase. 
  For more complete info, see [John Gruber's original spec]
  </code></pre>
  
  <p>a single new line is applied; however, the result shown with no new line.</p>
  
  <p>What do I miss? Where is GitHub Flavored Markdown (GFM) is actually used in GitHub?</p>
  
  <p><em>(Technical note: Markdown Here uses GFM line breaks, so there's no need to use MD's two-space line breaks.)</em></p>
  
  <p>It certainly says so, but I found this md uses 2 spaces br manner.</p>