Petra, my take on those comments:

Originally Posted By: gg53
The ForexGT_Arrow system is just a small part of the strategy: We use CurrencyStrength & Correlation to decide which pair to trade, Volume & Volatility for "IF" to trade, and ForexGT_Arrow for entry.

Is that Currency Strength and Correlation and Volume and Volatility form part of the entry criteria, hence it is part of the strategy, and not about measuring the results.