If Jamal is using a security classification guide (SCG) to assist in marking information from a source document. What describes Jamal's work is: Derivative Classification.
Derivative Classification can be defined as the process of classifying security information or data so as to enable easy marking of information from the source document or source information.
Based on the information given jamal is making use of Derivative Classification as this will enable him to know whether the information in the document has been classified.
Therefore what describes Jamal's work is: Derivative Classification.
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