title: Explain an MQL4 Cycle Identifier wHistory.mq4 ( a custom technical indicator )
body: <p>As a <code>MQL4</code> newbie I have some questions and would be very happy if someone could answer them in detail.</p>
  
  <p><strong>a)</strong> Could someone please explain how the cycle identifier ( indicator for MT4, e.g. found <a href="http://www.forex-tsd.com/adownload.php?attachmentid=179430" rel="nofollow">here</a> ) exactly works?!</p>
  
  <p><strong>b)</strong> Which value is calculated to decide if a signal is given?</p>
  
  <p><strong>c)</strong> Can a signal for a given candle also disappear ( repaint ) if this candle isn't the current one?</p>
  
  <p>Many thanks in advance!</p>