3.1 The System/Segment Specification (SSS) specifies the requirements for a system or a segment of a system. Upon Government approval and authentication, the SSS becomes the Functional Basslines for the system or segment.
7.1 This Data Item Description (DID) contains the format and content preparation instructions for data generated under the work tasks described by paragraph 18.104.22.168 of MIL-STD-490.
7.2 The Contract Data Requirements List should specify whether the document is to be prepared and delivered on bound 8 1/2 by 11 inch bond paper of electronic media. If electronic media is selected, the precise format must be specified.