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Message: [QUOTE="Ian, post: 4119529"] That takes me back to Spring 1976 and my first program that wasn't a print or a validate! (I had 9 months programming experience!). It was a costing program for a huge Bill of Materials - ideal for recursion. It was a re-write (with extra functionality) from PLAN (the 1900's assembler) to COBOL ready for a hardware migration. You are right. Recursion on the 1904 in COBOL was hard work! The result however was a great success - the new program did more than the old, ran faster, was many fewer source lines and was easier to test, so it was really profitable to write - and the customer was delighted. :) Regards Ian [/QUOTE]