RPG IV programmers are finding out that while built-in functions (BIF’s) were nice in fixed-format RPG IV, they are essential in free-format RPG IV. This session will look at the different kinds of BIF’s, and how they get the work done. Some topics included are the following:

1. Why BIF’s are so important in free-format RPG IV
2. The different kinds of BIF’s
3. The "return value" concept of many BIF’s
4. Op codes that are now BIF’s in free-format
5. Details on some powerful BIF’s, including %subst, %replace, and %subarr