Since its original publication, Programming in RPG IV has given thousands of students and professionals a strong foundation in the essentials of business programming featuring the newest incarnation of the RPG language: RPG IV. Now, the all-new Third Edition covers RPG IV as it exists in Version 5 -- a release that brings dramatic change to this popular programming language. The new free-format specification, the latest built-in functions, and more are all covered in this fully updated text (current to V5R2), complete with numerous programming examples and support material. Older programming styles and operations are now covered in sidebars, in support of programmers who are tasked with maintaining and/or updating "legacy" code.