title: What's an embedded zero?
body: <p>I'm reading the <a href="http://www.readability.com/articles/bn3m6ar8">Lua reference manual</a>, and it talks about "embedded zeros", symbolized by "\0".</p>
  
  <p>When I try to see it in the Lua console, it prints nothing meaningful:</p>
  
  <pre><code>&gt; print "a \0 b"
  a 
  </code></pre>
  
  <p>So, what's this "embedded zero"?</p>