Subject: Re: new screen based on Nasdaq100
The backtest can be extended using gtr1 indexes

I have found this feature of GTR1 very helpful, particularly since it has lost the ability to deal with Yahoo tickers. But I don't quite understand how the bear-catchers can be applied so far back into the past. DBE and SMA are obviously no problem. But does anyone know how Nasdaq NHNL works prior to the existence of the Nasdaq exchange?

Baltassar