The original article can be found here.
The strategy in plain English:
We buy the open on the first Friday of the month. We exit at the close.
Buy = DayOfWeek()==5 AND Day()<8 ;
Sell = C>0; //forced exit
If dayofweek(date)= 4 and dayofmonth(date)>1 and dayofmonth(date)<9 then buy next bar at open;
sell this bar at close;
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