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    | • | 
    Verification. 
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    – | 
    Actor
    receives notification of change in 
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    document. 
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    – | 
    Actor
    retrieves document from database. 
     | 
   
   
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    – | 
    Actor
    verifies the document and either 
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    approves
    the document or adds 
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    annotation
    to the document. 
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    – | 
    Actor
    adds uploads the document to the 
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    database. 
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