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ded:Definition: An
attribute of nonStateActor that specifies a user-defined order of an
element within the given document. All elements in the document
which specify the order attribute should be interpreted as entries
in a single, ordered list even though they may appear on different
elements. Values must be sequential, starting at 1, and may not
contain duplicates.
ded:Obligation: (Optional)
ded:Comment: Order is an integer. Values must
be sequential, starting at 1, and may not contain
duplicates.