ASI includes powerful traditional indicators programmed to accept a variable period length. This feature allows them to adapt as markets change -- sound logic, dynamic measurement. The indicators integrate into Metastock as external formulas. They are flexible and easy to use like traditional Metastock indicators, and process quickly as C++ dlls. Advanced design has been used to optimize their computational performance. They are ideal for real-time or end-of-day use. Refer to the Metastock user manual to learn how to plot external formulas.