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1) Why did the compiler even accept this?  Assuming (mykds) was treated
as a single field, shouldn't the compiler have complained that mykds was not
the same size as the first key field in the file.

I'm not Barbara but I can answer this one.  The reason is that since you are
in /free a list of key fields in parentheses is a perfectly legal way to
supply a partial (or indeed full) key.  In fact most people I know use this
in preference to %KDS as you can see exactly what key fields are in use.

The reason the compiler doesn't complain is that as long as the base data
type matches (char/num/date) it will effectively do an eval for you into a
temp field that does match the key (first) key field's definition, and use
that as the key.  It is one of the features of the new free-form key
support.

If you'd done it in fixed form the compiler would have gotten upset. 

As to your second question I can't see why it would change it.  Are you sure
that is all that was changed?

Jon Paris
Partner400

www.Partner400.com 



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