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Order
Order[ , ] gives 1 if is before in canonical order, and -1 if is after in canonical order. It gives 0 if is identical to .
Examples: Order[a, b]  ; Order[b, a]  .
Order uses canonical order as described in the notes for Sort.
See The Mathematica Book: Section 2.2.10.
See also: Equal, SameQ, Sort.
Further Examples
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