This study make use of Hull Moving Average and Bollinger Bands.
The crosses give signal about HMA and BB crossovers, they are a bit lagging, if you stare well you will spot them a little earlier. It look like a good idea to buy and sell when HMA is near or on the outside of the outer bands.
By default the Bollinger Bands uses Simple Moving Average with 21 periodes, and Hull Moving Average use 9 periodes. You can alter the settings in the format dialog.
Please use as pleased, and if you do something clever with it I'll be happy to know :D