Internationally recognized RPG expert Bob Cozzi has updated his classic work on RPG IV to include all of the new function and features that have been included in the language since 1996 -- including the new D-specs plus more than 30 new opcodes and built-in functions. Cozzi takes you through the language from the very foundations to the most advanced technique. At the core of the value of this book are the chapters on Built-In Functions and opcodes. Cozzi details each BIF and opcode with a syntax table that gives you the information you need at a glance plus an explanation of the how and why of usage. And this isn't just a book on theory and rules. Cozzi includes over 100 charts and tables that show you how the rules apply. He also includes samples of the functions and operations in real-life code examples over 350 individual examples. This is a book that you will turn to again and again as you program in RPG IV.