On 25/06/2010, at 5:52 AM, Dennis Lovelady wrote:

As far as I know, IBM have maintained compatibility for all output files all
the way back to V1 (and indeed to the S/38). So, I say again: what files
were changed and when?

In general, changes to outfiles are performed in a compatible fashion. New fields are added at the end of the format and the template file is shipped with LVLCHK(*NO). This makes most changes transparent.

There have been occasions where Rochester screwed up. I recall one case where someone stuck a longer than 6 character field name into an outfile thus forcing RPG III users to rename it or use RPG IV. I recall noise being made about broken outfiles on one or two releases. It has happened but infrequently.

Simon Coulter.
FlyByNight Software OS/400, i5/OS Technical Specialists

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