code: private boolean _readChar()
  	{
  		int endIndex = pos + 1;
  		if( endIndex <= len )
  		{
  			_char = text.substring( pos, endIndex );
  			pos++;
  			return true;
  		}
  		pos = len;
  		return false;
  	}
docs: parse a day number (0=sunday) and put it in the private _day attribute
  
  @return boolean