> (greater than), < (less than), == (equal to), AND , OR , NOT .

The is a highly optimized, array-based programming language used to build automated trading systems, custom technical indicators, and high-speed backtests. Unlike loop-heavy languages, AFL processes entire arrays of data (like historical close prices) in a single operation, making it one of the fastest algorithmic trading platforms available. 1. Understand AFL Core Architecture and Array Processing

Rotational mode is ideal for ranking-based strategies:

| Pattern | Example | |---------|---------| | (for recursive calc) | staticVar = StaticVarGet("var"); | | Bar indexing | Close[0] (current), Close[1] (previous) | | Conditional assignment | ma = IIf(BarIndex() > 20, MA(Close, 20), Null); | | Referencing future bars (for backtesting only) | Ref(Close, -5) | | Highest over N bars | HHV(High, 20) | | Lowest over N bars | LLV(Low, 20) |

I adore NCSS and PASS. I have been using them for 20 years now.

Mario Martinez Gonzalez, MPH, FEE, MD, Universidad Nacional Autonoma de Mexico

"The NCSS software is and has always been the best solution for my work as an assessor. I have been exposed to many other analytical and statistical software applications and have found there is no other product on the market that can match the ease of learning, comprehension of function, and the frugality of price the NCSS product offers..."

Michael Ireland, CAE, Assessor