9b1d6552____eSort_Home_Page__Notes__description
[Switch] /d [Specifies] duplicate list [Notes, description] 
Use this switch to create a file containing a list of all of the duplicate email addresses discarded from the input list. If a discard list file is not specified, eSortTM just discards any duplicate records without further notice, unless the "/n" (no discard) switch is specified. Note: The email addresses in the "discard" list are not guaranteed to be unique.
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Notes, description