     {
       if (index == i)
       {
-        lcd.write(byte(SPACE_CHAR));
+        lcd.write(byte(SpaceChar));
       }
       else
       {

    {
      if (index == i)
      {
        lcd.write(byte(SELECT_CHAR));
      }
      else
      {


  // handle case when events wrap around
  if (result < 0)
    result += EventQueueLength;

  interrupts();

