title: Purpose of tick (apostrophe) in F# value names?
body: <p>I'm going through a tutorial on Function Composition, and I keep seeing the <strong>'</strong> operator used at the end of a value declaration. </p>
  
  <p>I know that it means a generic when it precedes a parameter, but what does it mean when you see it like: </p>
  
  <pre><code>let add x y = x + y
  let myFunc' = add 10
  </code></pre>
  
  <p>The only thing I can see is that the <em>'</em> is just another character in the identifier. Is that right? Because if I use that same example, using <em>myFunc</em> gives a not defined error, where <em>myFunc'</em> does resolve. </p>