title: How do you escape the trademark or copyright symbol in markdown?
body: <p>With markdown I want to say something like:</p>
  
  <pre><code>The parser consumes a .tm file.
  </code></pre>
  
  <p>But (in my GitHub readme.md markdown file) and also using Markdown Pro on my mac, markdown wants to make the tm a superscripted TM trademark symbol.  I've tried backslashes in various locations .\tm, .\t\m, .(tm), etc.  but I just end up with the slashes in the output text.  Does anyone know how this is supposed to work?</p>
  
  <p>As I type this I can see that stackoverflow is using markdown and I'm not getting that behavior!  Whuuhh?  Insight appreciated!</p>