lang=txt
  code block
  code block
  
  
  
  
  code block
  
  
            
  
  code block
~~~~~~~~~~
<div class="remarkup-code-block" data-code-lang="txt" data-sigil="remarkup-code-block"><pre class="remarkup-code">code block
code block




code block


          

code block</pre></div>
~~~~~~~~~~
  code block
  code block
  
  
  
  
  code block
  
  
            
  
  code block