Di+ crosses above Di- when indicator crosses above 0 which can be considered as a BUY signal.
and conversely Di+ crosses below Di- when indicator crosses below 0 which can be considered as a SELL signal.
Additionally I put a second (OPTIONAL) line (Signal line) which is a 8 bar ( ) of DMOSC to confirm signals for further assistance.
Users can add the second optional line (Signal Line) by checking the box : Show line? on the INPUTS section of the indicator SETTINGS menu.