title: What is the difference between next() and next('route') in an expressjs app.VERB call?
body: <p>The docs read:</p>
  
  <blockquote>
    <p>The app.VERB() methods provide the routing functionality in Express,
    where VERB is one of the HTTP verbs, such as app.post(). Multiple
    callbacks may be give, all are treated equally, and behave just like
    middleware, with the one exception that these callbacks may invoke
    next('route') to bypass the remaining route callback(s). This
    mechanism can be used to perform pre-conditions on a route then pass
    control to subsequent routes when there is no reason to proceed with
    the route matched.</p>
  </blockquote>
  
  <p>What do they mean by "bypass the remaining route callbacks?"? I know that <code>next()</code> will pass control to the next matching route. But... what function will get control with <code>next('route')</code>...?</p>