in reply to Format definition query

You need to put a comma after each variable in the lines where the errors occur. The format documentation shows an example.

--Nick

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Re^2: Format definition query
by merrymonk (Hermit) on Jan 12, 2015 at 21:55 UTC

    Many thanks - adding commas did the trick. I suspected it may be simple.

    It is interesting that the error message does give a clue to what has to be done but it is much clearer when you know the answer!

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