/*
 * Function func($arg);
 *   Description of the functions
 * 
 *   $arg -  the argument
 */
function func($arg) {
  global $ouch; // localize the $ouch variable
                // it is expected to be set alread

  
  /* 
   * Be warned, this code may be confusing
   */
  // .. some complex code ...

  #echo 'are we here?'
}