title: What is the correct syntax for using EXCLUDE_SYMBOLS?
body: <p>I have a class like so:</p>
  
  <pre><code>class Foo {
  public:
    /** blah blah */
    void bar();
  }
  </code></pre>
  
  <p>I want to exclude this from the documentation, but <code>EXCLUDE_SYMBOLS</code> isn't working for me. I have tried the following (one by one):</p>
  
  <pre><code>EXCLUDE_SYMBOLS = Foo::bar
  EXCLUDE_SYMBOLS = Foo::*
  EXCLUDE_SYMBOLS = Foo
  EXCLUDE_SYMBOLS = *
  </code></pre>
  
  <p>None of these is working. Is there a mistake in my syntax, or is there some other configuration I need to change for this to take effect?</p>
  
  <p>I have looked at several questions on SO, but the syntax used in those answers doesn't work for me. </p>