| http://www.w3.org/ns/prov#value | - , i.e., a mailer having features which maintains the security for the contents, e.g., financial documents such as a check or tax document, contained within the mailer. [0011] The mailer form of the subject invention is constructed from a single ply of substrate material, such as paper stock commonly used in the industry, having standard width, e.g., 8??? inches and meeting banking and postal requi
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