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This article is in desperate need of an introduction. What country does it apply to? What is the SCO? I don't know anything about this topic, but I would suggest something like:
The Selected Characteristics of Occupations Defined in the Revised Dictionary of Occupational Titles (SCO) is a document used by the Social Security Administration in the United States since 1960. It is used to help adjudicate disability decisions made by the administration.
