title: BEGIN(INITIAL) in flex parser
body: <p>I have a flex question. I cannot understand what <code>BEGIN(INITIAL)</code> command is. I think this is the way to go to the start of the current state that I am already in, but I am not sure if I got it correct. Can you explain to me in simple terms what <code>BEGIN(INITIAL)</code> does?</p>
  <p>Thank you in advance!</p>