Easy. Powerful. Open source. Runs everywhere and interfaces to everything. That's Rexx.This book explains the language, from an easy tutorial to advanced programming.You'll learn -- Rexx for Windows, Linux, Macs, mainframes, and cell phones- Interfacing to GUIs, DBMSs, XML, JSON, Apache, & other tools- Open Object Rexx for object-oriented scripting - Java integration with NetRexx- How to write edit macros- Mainframe programmingAdvanced arrays, parsing, debugging, OS commands, & more!The only Rexx reference you ever need!