Network Working Group                                         R. Watson
Request for Comments: 115                                      J. North
NIC 5822                              Stanford Research Institute (ARC)
                                                         16 April 1971

    SOME NETWORK INFORMATION CENTER POLICIES ON HANDLING DOCUMENTS

INTRODUCTION

  The Network Information Center (NIC) seeks to facilitate the flow of
  information between sites on the Network and to and from other
  stations whose work makes them valuable as participants in the
  Network dialog.  The NIC is concerned both with the techniques for
  the flow and with optimizing the content of the information itself.
  Some aspects of the work of the NIC in support of information flow
  are described here, and some suggestions made to Network participants
  of ways they can help this work.

  All information handled by the NIC is available to any Network
  participant.  All information generated by the NIC is unclassified
  and is without distribution limitation except as dictated by staff
  and budget size.  Any information sent by an originating party to the
  NIC for recording or distribution is presumed to be unclassified and
  without distribution limitations as well.  Any statement carried by a
  document thus submitted which seems to imply a limitation on
  distribution, quotation, or citation is presumed not to apply to its
  handling by the Network Information Center.

NIC NUMBER

  One important function of the Network Information Center is to make
  records of the existence of RFC's, formal NIC-related manuals and
  reports, Network memos, other Network informational items, and other
  informational items of interest to Network participants, and to index
  these records so that such items can be recalled when needed.

  To tag the informational items a serial number is assigned by NIC.
  The serial number has no intrinsic meaning, not even necessarily an
  indication of sequence of issue.  It is a unique identifier and can
  be used to refer to the item in further communications, to facilitate
  indexing, and to allow numeric filing of documents.










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  Use of the NIC number has advantages in online dialog which are not
  yet demonstrable around the Network, but the cooperation of Network
  participants in applying one when a document is originated is
  important.

THE NIC CATALOG

  Items of information relevant to the Network appear in many forms,
  including technical reports, RFC's, brief network memos, journal
  articles, and letters.  Reference to these is simplified by
  assignment of a NIC number to each.  To record the item to which the
  NIC number refers, a description of each item, using a set of
  standard data elements, i.e, author, title, etc., is coded and
  entered as an online system (NLS) statement into a machine file.

  An example of a statement with typical coded data elements:

        (A5480) *a1 James E. White #2 org *b2 University of California
        at Santa Barbara #3 Computer Research Laboratory #5 Santa
        Barbara, California *c1 An NCP for the ARPA Network #6 142p.
        *d1 21 December 1970 *f1 r *f2 o *rl UCSB CRL 12 *31 ARPA #6 AF
        19628-70-0-0314 *w2 3-11-71 *y1 Describes program designed and
        implemented at Santa Barbara node of ARPA Network, written in
        assembly language and implemented on 360/75.  Discusses
        interface with hardware, software, and operator. *y3 Host-
        Interface protocol; Host-IMP protocol; User-NCP protocol;
        Host-Host protocol; Host-IMP messages, IMP-Host messages *z1
        all *z2 NIC *z3 new *

  The group of files at ARC containing these statements of data about
  NIC items and other informational items is the Master Catalog.  The
  term NIC Catalog refers to the machine file created by collecting the
  statements coded *z2 NIC in the Master Catalog.

  The data element *z1 indicates which Stations hold a copy of an item;
  not all items related to NIC are sent to Stations, and in the future
  it is expected that Stations will submit many documents to NIC for
  cataloging which are not held by other Stations.













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NIC CATALOG LISTINGS AND INDEXES

  Programs have been written at ARC to collect, sort, analyze and
  format the statements and the data elements in the statements to
  produce catalogs and indexes such as those in the Current Catalog of
  the NIC Collection, NIC (5145,).

  The Current Catalog of the NIC Collection is a functional document,
  as explained in Branch 3 below.  It has as its contents, at any time,
  the current issue of a bibliography of items from the NIC Catalog,
  called a NIC Catalog Listing, and author and keyword indexes.

  Examples of entries in the Catalog Listing and in indexes are shown,
  using the statement above:

     Catalog Listing by Author:

        An NCP for the ARPA Network

             James E. White (University of       5480 White
             California at Santa Barbara)

             21 December 1970

             Describes program designed and
             implemented at node of ARPA Network,
             written in assembly language and
             implemented on 360/75.
             Discusses interface with hardware,
             software, and operator.

      Catalog Listing by NIC number:

         An NCP for the ARPA Network             5480

              James E. White (University of
              California at Santa Barbara)

              21 December 1970

              Describes program designed and implemented
              at node of ARPA Network, written in
              assembly language and implemented on
              360/75. Discusses interface with
              hardware, software, and operator.






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        Author Index:

           Subject: Education Status, memo to  5456  Westlund
           An NCP for the ARPA Network         5480  White
           NWG/RFC 78 (NCP Status Report       5199  White

        Titleworld Index:

           Natural Communication with Computers  5639  Natural
           An NCP for the ARPA Network           5480  Network
           Proposal for a Network Interchange    4752  Network

  A NIC Catalog Listing will indicate those items held in the Station
  Collections either by a separate listing or by a notation with each
  reference.  A number catalog or index serves as a shelf list of
  documents held by a Station.  The indexes are not limited to the
  Station Collections but lead to the entire Catalog.

DATA ELEMENTS

  The data elements for information items include the author, title,
  addressee, date, other numbers, keywords, and abstract.  When these
  elements do not exist in the item, they are supplied by a NIC
  cataloger if possible.  In online communication around the Network,
  "online dialog", several of these elements of data will be recorded
  automatically.  Lacking online recording, it is important that
  originators of reports, memos, and other such items be diligent in
  including these data in their transmissions.

     For memos, essential data elements which the originator
     should supply are:.

        author(s)
        address(es) of author(s)
        addressee(s)
        address(es) of addressee(s)
        date of origination
        subject of memo

        A preassigned NIC number is desirable. A number for
        assignment can presently be obtained by calling NIC, and
        soon will be obtainable online.

        The addressees of a memo can of course be a group, such
        as the Network Working Group, or the Glitch Cleaning
        Committee, in which case the NIC needs a list or
        reference to a list of the people in the group.




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     For reports and other formal documents, essential data
     elements are:

        author(s)
        addresses of author(s)
        title
        date
        abstract
        keywords

        A short abstract, 150 to 200 words, giving some of the
        substance of the document is of importance in the NIC
        record and even for the person about to read the
        document. Obviously, a well-written author abstract is
        preferable to one produced by the NIC staff.

        Keywords supplied by the author, preferably those from a
        standard thesaurus, will be used in machine retrieval.
        When such author-assigned keywords are lacking, the NIC
        will supply some. Recommended sources for keywords are:

           Categories identified by Peggy Karp, Categorization
           and Guide to NWG/RFC's.  NIC 5819.

           American National Standard Vocabulary for Information
           Processing, ANSI X3.12-1970.  NIC 5827.

           Department of Defense, Thesaurus of Engineering and
           Scientific Terms, 1967, AD 672 000.  NIC 5829.

           NASA Thesaurus, December 1967. NASA SP-7030.  NIC
           5828.

    When a document being issued supercedes an earlier
    document, this information is particularly important, and
    should be supplied by the author.

SUBCOLLECTIONS

  Groups of documents, such as the NWG/RFC's and the replies to Sher's
  survey, as well as the Station Collections, are cataloged by NIC as
  subcollections.  That is, they are retrievable as a subset of the NIC
  Catalog, which in turn is a subset of a Master Catalog at ARC.  The
  capability of making subcollections is provided for Network
  participants.






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     To create a subcollection in the NIC records, a Network
     participant will be able to indicate to NIC the records he wishes
     to have so grouped, and this information will be entered in the
     Master Catalog statement for the document, for later retrieval.

FUNCTIONAL DOCUMENTS

  Several documents generated in Network activities are subject to
  occasional revision and updating.  The NIC Catalog, the Directory of
  Network Participants, and the Directory of Network Resources are
  examples.  These and external documents such as the BBN manuals are
  referred to by NIC as "functional documents".

     More generally, a functional document is a document whose title
     and function remain constant, but whose contents can change.  A
     functional document contains a single or several documents which
     can be added to, deleted, or replaced entirely or selectively.
     Thus the functional document, which has a NIC number, can be
     referenced in other documents with some assurance that it will be
     in existence, even though the subdocuments with their distinctive
     NIC numbers may be in flux.  In the Catalog, the number of a
     functional document in which a specific document may be contained
     is listed, and the current contents of each functional document is
     indicated.

     In preparing a document which is expected to be revised, Network
     participants are urged to use a looseleaf format.

  The Network Information Center intends to support the distribution
  and recording of contents of functional documents.  Procedures have
  been established, as described below, for fitting the changes to such
  documents into the NIC system, and for reproducing and distributing
  them to individuals or stations with instructions for their
  integration into the existing documents.

PROCEDURES FOR REVISION MATERIAL

  Original manuals and other functional document materials are
  reproduced and distributed by NIC just as other Network publications.
  For all documents obtained through NIC, NIC will attempt to receive
  and make distribution of updates.

  NIC also wants to make the processes of inserting the revisions and
  of recording the changes as easy and foolproof as possible.  The user
  should not only be given the current materials, but should be able to
  determine the version he holds, and to be able to refer to updates
  uniquely.  The following is copied from the procedure instructions




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  NIC has written for its own use.  These procedures are also
  recommended to Network participants for their use in preparing
  revision material to be sent to NIC.

  Update conventions

     Substantial revision of a bound document, or of more than a few
     pages of a loose leaf document:

        A new document will be published, with a new NIC number,
        and will bear a notation under the number on the title
        page and/or cover, e.g.,

           NIC 5772
           supercedes NIC 5621

        Few pages inserted or revised in a looseleaf or
        corner-stapled document:

           Each new or revised page will bear the original document
           number, with a notice of revision, e.g.,

              NIC 5742
              3-10-71

           Inserted pages will be numbered to fit into the existing
           document, e.g., pages 5.1, 5.2, 5.3, may be inserted
           between pages 5 and 6.

           Deleted pages will be replaced by a single page
           indicating the deletion, e.g.,

              Pages 7-12 deleted, 3-25-71

        A new table of contents and/or title page will be issued
        bearing the revision notice. In addition, at the time of
        each revision a page or pages will be prepared and
        issued which indicates all additions, deletions, and
        revisions which bring the document up to date.

     Revisions will be made only by substitution, addition or deletion
     of a full page or more.  NIC will not revise its own publications
     by lists of errata, and strongly recommends against their use by
     others in the Network.  However, when NIC receives such lists of
     errata, it will reproduce and distribute them with suggestions to
     Station Agents for recording and inserting them.





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  Distribution and transmittal procedures

     The transmittal letter accompanying a set of revision material and
     the revision material itself constitute a separate document, a
     copy of which is filed at NIC, where a new copy can be provided at
     any time.

     The transmittal letter will indicate the appropriate information;
     document number of the revision material, date, document number of
     the publication being updated, its date, and, when practicable,
     information on the changes made in the text.

  Revision notation in the printed Catalogs and their indexes

     Catalog entry

        Supercession

           The data element containing "superceded by NIC xxxx"
           will be formatted to appear at the beginning of the
           citation of the superceded document.

           The data element containing "supercedes NIC xxxx"
           will be formatted to appear following the abstract in
           the citation.

        Partial revision

           The data element containing the note of revision will
           be formatted to appear following the abstract.

     Entries in author, titleworld, or other indexes

        Supercession

           The data element covering supercession will be the
           only text in the entry for the superceded document.

           Supercession will not be indicated in the entry for
           the superceding document

        Partial revision

           Partial revision will not be indicated in the index
           entry

      [ This RFC was put into machine readable form for entry ]
         [ into the online RFC archives by Jay Kominek 2/99 ]



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