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source and a comment which evaluated and analyzed the information contained in the source. As the SID has matured, the individual items have more frequently become short wrap-up type items on various fields and sub-fields of science and technology, frequently covering trends rather than single scientific events. These were originally considered and labeled "Feature Articles" when the format of the SID was primarily composed of short items and a few feature articles. The regular reprinting of the Summary or Summary and Conclusions of longer OSI reports was begun about 1955 and has continued to the present. Their inclusion in the SID was to provide quick dissemination of the highlights of these position papers to a wide audience.
SID items, as indicated above, may be and generally are based on several sources and include the analyst's evaluation. They always are evaluated intelligence. As to format, always have conclusions, whether alone or in combined Summary and Conclusions. They may be based solely on OSI or FMSAC analysis, or they may be based primarily on work done under contract to OSI. In such a case the contractor is credited with his work.
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