@ChrisBrooks
"...you'll have to use it in every piece of code which references this file"
And that's why I've proposed to use labels and didn't even mention SAS name literals for variable names (they are to be avoided).
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You're welcome. @RW9' s solution would probably work for you, too, and you should probably get familiar with how proc transpose works since there are times when it will be far easier than a data step approach.
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