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Moving to Integrated Language Environment for RPG IV by Klaus Subtil

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Chapter 4.Conversion Considerations

To take advantage of the enhancements provided with the RPG IV language definition,you might consider converting your existing RPG application. As you can appreciate, RPG IV gives you more flexibility and better readability, and as a result of these advantages, you can improve your development environment and productivity.

An important point is that the new design of RPG IV opens the door for future enhancements and functions that were impossible to implement on the previous compiler. The reason was the restrictions in the layout on the different specifications statements. Increasing the length for some of the entries, introducing keywords, and free format operations in the extended calculation specifications ...

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