Product Review: Behold!, version 2.5.3
Behold! is a unique program, aside from the fact that it lives only on Macintosh computers (although it can integrate with or run on an IBM-PC with the help of another program; more on that later). Everything about the program revolves around the job of creating, analyzing and trading technical trading models. From the moment you start it up until you put away your last model, your whole attention is focused on defining or refining a trading model in the kind of integrated environment usually used for intensive software programming.
For example, when you start out, you don't load a datafile; you load a trading model, even if it's a new one. The trading model comes with a chart window, a spreadsheet window already loaded and a trading rules window, and possibly, a test results window. This assemblage makes it possible to interactively change the computations you've constructed, see the results on the chart, and test the new formulation with a simple command-T. This makes iterative development very fast, especially since the program itself is very fast, even on an older 68030 or 68040 Mac.