In this chapter, you got a glimpse of some advanced features that Red has to offer. We saw how powerful reactive programming techniques make it possible to link two or more objects, so that if one changes, the others change with it. You got an introduction to Red/System, the lower layer of the Red platform, and learned how to incorporate its power to improve performance or to do low-level coding from within your Red apps. We captured command-line arguments for our script, and used call to start other programs. We learned how to use the vector!, hash!, and map! datatypes for performance when working with number series and dictionaries. At the end, you got a glimpse of the (near) future of Red's development, and you acquired a collection of the best links to turn to if you need more help.

We have now come to the end of our Red journey. I hope that this whirlwind overview...