A number that must be used as a key ..... The first and last column should be the sort keys.

:) you gave sample input and sample output

the sample output does not appear in the sample input

its not clear what you mean by "first column code" and I cannot deduce/guess from the sample you provided

The word explanations do not clarify which part is which

In reply to Re^3: Sort files by date in the file name. by Anonymous Monk
in thread Sort files by date in the file name. by leoberbert

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