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UNKNOWN
Updated by: 694
Network Working Group                                          J. Postel
Request for Comments: 661                                        SRI-ARC
NIC: 31203                                                 November 1974


                          Protocol Information

   This file contains information on the various protocols in the ARPA
   Network.  An effort will be made to keep the information current, but
   this depends on the cooperation of the users of this file to convey
   any information about protocol developments, or corrections to this
   information to Jon Postel at SRI-ARC.

   This is a compendium of all the protocol related activity and most of
   this activity is with experimental protocols, for those protocols,
   which are official standards the designation "[Official]" will be
   appended to the name.

   Much of the documentation of protocols appears as Requests for
   Comments (RFCs) and many of these are available online.  When a
   document is accessible online, a pointer to that source will be
   given.  Also note that recent RFCs are online at Office-1 in
   directory <NETINFO> with names of the form RFCnnn.TXT where nnn is
   replaced by the RFC number.

   This file is online as:

      Pathname: [SRI-ARC] <POSTEL> PROTOCOL-INFORMATION.TXT

      and also [SRI-ARC] <POSTEL> PROTOCOL-INFORMATION.NLS

   IMP-IMP

      surface

         Contact:

            McKenzie, Alex. (MCKENZIE@BBN)

         Documents:

            Heart, F. et. Al. "The Interface Message Processor for the
            ARPA Computer Network," AFIPS Conference Proceedings,
            36:551-567, SJCC 1970.

         People:

            John McQuillan (MCQUILLAN@BBN)



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RFC 661                                                    November 1974


         Schedule:

         Recent developments:

      satellite

         Contact:

            Randy Rettberg (RETTEBERG@BBN)

         Documents:

         People:

            Kahn, Robert. (Kahn@ISI)

         Schedule:

         Recent developments:

   IMP-HOST

      IMP-Host [Official]

         Contact:

            McKenzie, A. (McKenzie@BBN)

         Documents:

            "Specification for the Interconnection of a Host and an
            IMP," BBN Report 1822, Revised March 1974.

            McQuillan, J. "Host Alive/Dead Logic," BBN Memorandum to
            Technical Liaisons, 18-July-74.

            Burchfiel, J. "Ready Line Philosophy and Implementation,"
            NIC 30872, RFC 642, 5-July-74.

            Walden, D. "Some Changes to the IMP and the IMP/HOST
            Interface," RFC 660, 23-Oct-74.

               [Office-1 <NETINFO> RFC660.TXT

         People:

            McKenzie (MCKENZIE@BBN)




Postel                                                          [Page 2]


RFC 661                                                    November 1974


            Walden (WALDEN@BBN)

            Postel (POSTEL@SRI-ARC)

            Burchfiel (BURCHFIEL@BBN)

            McQuillan (MCQUILLAN@BBN)

         Schedule:

         Recent developments:

            The "link number" filed has been extended from 8 to 12 bits
            and renamed the "message identification" field.  Message
            type 6 now is used to indicate a reason for a type 7
            (destination dead) message. (See BBN1822).

            There has been some recent changes to the Ready line
            interpretation by the IMP for deciding the alive/dead status
            of a host.

            Important changes to the IMP and IMP/HOST interface
            announced in RFC 660 23-Oct-74.

   HOST-HOST

      ncp - standard host-to-host [Official]

         Contact:

            Postel, Jon. (POSTEL@SRI-ARC)

         Documents:

            McKenzie, A. "Host/Host Protocol for the ARPA Network," NIC
            8246.  Jan 1972.

            Postel, J. "Assigned Link Numbers," RFC604, NIC21186, 26-
            Dec-73.

         People:

            Postel, Jon. (POSTEL@SRI-ARC)

            McKenzie, Alex. (MCKENZIE@BBN)

         Schedule:




Postel                                                          [Page 3]


RFC 661                                                    November 1974


         Recent developments:

      ncp - standard host-to-host [Experimental]

         Contact:

            Postel, Jon. (POSTEL@SRI-ARC)

         Documents:

            McKenzie, A. "Host/Host Protocol for the ARPA Network," NICE
            3246. Jan 1972.

            Postel, J. "Assigned Link Numbers," RFC604, NIC22186, 26-
            Dec-73.

            Burchfiel, et. Al. "Tip-Tenex Reliability Improvements" RFC
            636 NIC 30490 June 1974.

         People:

            Postel, Jon. (POSTEL@SRI-ARC)

            McKenzie, Alex. (MCKENZIE@BBN)

            Burchfiel, Jerry (BURCHFIEL@BBN)

            Walden, Dave (WALDEN@BBN)

         Schedule:

         Recent developments:

            The BBN TIP and TENEX groups have specified and are
            implementing additional protocol commands with the intention
            of providing better reliability and survivability over
            system malfunctions.  The additional protocol commands are
            for cleaning up partly closed connections and
            resynchronizing the allocation values on open connections.
            (See RFC 636).

   tcp - Transmission Control Protocol

      Contact:

         Cerf, Vint. (CERF@ISI)





Postel                                                          [Page 4]


RFC 661                                                    November 1974


      Documents:

         Cert, V. and R. Kahn. "A Protocol for Packet Network
         Intercommunication," IEEE Transactions on Communication Vol
         COM-22 No 5, May 1974.

         [parc-maxc] <cerf> TCPSPEC3.NLS

         Mader, E. "A Protocol Experiment," RFC 700, NIC 31020.

         [ISI] <CERF> TCP-CHANGES.

      People:

         Cerf at SU-DSL

         Tomlinson at BBN

         Kirstein at London

         Postel at SRI-ARC

      Schedule:

         Some experiments now running.  Implementation of full protocol
         to begin by 15-Oct-74.

      Recent developments:

         Specification completed August 4th, but some work still in
         progress on handling of single message conversations.  A new
         sequencing scheme (proposed by Tomlinson) may be utilized.  The
         addressing field is now used as 4-bit format, 4-bit network, 16
         bit TCP, and 24 bit process&port.  Crocker has suggested a 64-
         bit path address to be parsed and reformatted by the gateways
         along the route.  There is reluctance to experiment with too
         many things at one though.

         (28-Oct-74) A file indicating some of the changes in the
         specifications since the 4-Aug-74 document is now available as
         [ISI] <CERF> TCP-CHANGES.  The areas of change are "Initial
         Sequence Number", "Socket definition", "Additional user System
         Calls", "Packet format", and "Discussion of opening and closing
         (SYN,REL)".

         (23-NOV-74) Specifications for test implementation are now said
         to be ready on 1-DEC-74, and an implementation completed by 1-
         FEB-74.



Postel                                                          [Page 5]


RFC 661                                                    November 1974


   nvp - Network Voice Protocol

      Contact:

         Cohen, Danny. (COHEN@ISI)

      Documents:

         The current specification is in an online file at isi in the
         directory voice as nvp.lst.

         Pathname = [isi] <voice> nvp.lst

      People:

      Recent developments:

         New specification document available (10-Oct-74).

            "Specifications for the Network Voice Protocol (NVP)" NSC
            Note 43

   packet radio

      Contact:

         Kahn, Robert. (KAHN@ISI)

      Documents:

      People:

      Schedule:

      Recent developments:

   Network Debugging Protocol

      Contact:

         Eric Mader (Mader@BBN)

      Documents:

         Mader, E. "Network Debugging Protocol," NIC 30873, RFC 643,
         July-74.

      People:



Postel                                                          [Page 6]


RFC 661                                                    November 1974


      Schedule:

      Recent Developments:

         This is a protocol for a PDP-11 cross-network debugger.

   HOST-FRONTEND

      Host-Front End

         Contact:

            Michael Padlipsky (MAP@CASE-10)

         Documents:

            Padlipsky, M. "A Proposed Protocol for Connecting Host
            Computers to ARPA-Like Networks via Front-End Processors,"
            RFC 647, NIC 31117, 12-Nov-74.

               [Office-1] <NETINFO>RFC647.TXT

         People:

            Padlipsky at MITRE Washington (MAP@CASE-10)

            Postel at SRI-ARC (POSTEL@SRI-ARC)

            McConnell at Illiac (JOHN@I4-TENEX)

         Schedule:

         Recent developments:

            This is a suggested simple protocol for connecting to host
            to front end computers, which are in turn connected to the
            network.

   PROCESS-PROCESS

      ICP - Initial Connection Protocol [Official]

         Contact:

            Postel, Jon. [POSTEL@SRI-ARC)






Postel                                                          [Page 7]


RFC 661                                                    November 1974


         Documents:

            Postel, J. "Official Initial Connection Protocol," NIC 7101
            11-June-71.

            Wolfe, S. [no title] RFC 202 NIC 7155 26-July-71.

            Postel, J. "Official Telnet-Logger Initial Connection
            Protocol," NIC 7103 15-June-71.

         People:

            Postel at Sri-arc

         Schedule:

         Recent developments:

      Telnet

         Old Telnet

            Contact:

               Postel, Jon. (POSTEL@SRI-ARC)

            Documents:

               Postel, J. "Telnet Protocol," RFC 318 3-April-72.

            People:

            Schedule:

            Recent developments:

         New Telnet [Official]

            Contact:

               Postel at SRI-ARC

            Documents:

               NIC 18639 "TELNET Protocol Specifications" AUG 73

               NIC 1864C "Telnet Option Specification" Aug 73




Postel                                                          [Page 8]


RFC 661                                                    November 1974


                  Telnet Options

                     NIC 15389 "Binary Transmission"

                     NIC 15390 "Echo"

                     NIC 15391 "Reconnection"

                     NIC 15392 "Suppress Go Ahead Option"

                     NIC 15393 "Approximate Message Size Negotiation"

                     NIC 31154 "Status" RFC 65125-Oct-74.

                        [Office] <NETINFO>RFC651.TXT

                     NIC 16236 "Timing Mark"

                     NIC 19859 "Remote Controlled Transmission and
                     Echoing" 1-Nov-73.

                     NIC 20196 "Output Line Width" 13-Nov-73.

                     NIC 20197 "Output Page Size" 13-Nov-73.

                     NIC 31155 "Output Carriage Return Disposition" RFC
                     652 25-Oct-74.

                        [Office-1] <NETINFO>RFC652.TXT

                     NIC 31157 "Output Horizontal Tab Disposition" RFC
                     654 25-Oct-74.

                        [Office-1] <NETINFO>RFC653.TXT

                     NIC 31156 "Output Horizontal Tab Stops" RFC 653
                     25-Oct-74.

                        [Office-1] <NETINFO>RFC653.TXT

                     NIC31157 "Output Form Feed Disposition" RFC 655
                     25-Oct-74.

                        [Office-1] <NETINFO>RFC655.TXT

                     NIC 31159 "Output Vertical Tab Stops" RFC 656 25-
                     Oct-74.




Postel                                                          [Page 9]


RFC 661                                                    November 1974


                        [Office-1] <NETINFO>RFC656.TXT

                     NIC 31160 "Output Vertical Tab Disposition" RFC 657
                     25-Oct-74

                        [Office-1] <NETINFO>RFC657.TXT

                     NIC 31161 "Output Line Feed Disposition" RFC 658
                     25-Oct-74.

                        [Office-1] <NETINFO>RFC658.TXT

                     NIC 16239 "Extended Options List"

            People:

               Jon Postel at Sri-Arc (POSTEL@SRI-ARC)

               Alex McKenzie at BBN (MCKENZIE@BBN)

               Doug Dodds at BBN (DODDS@BBN)

               Dave Crocker at UCLA-NMC (DCROCKER@ISI)

               Kurt Barthelmess at UCSD (BOWLES@ISI)

            Schedule:

               All Hosts were to have been running the new Telnet (both
               user and server) by 1 January 1974.

            Recent developments:

               A significant number of server systems now have new
               telnet implementations. (See RFC 702).

                  Note: the server program is to be available on socket
                  23 decimal (27 octal).

               The Status Option has been revised to take advantage of
               the subcommand feature and to reduce the amount of data
               transmitted to report the option status.

               Seven new options have been defined to allow control of
               the format effectors Carriage Return, Line Feed, Form
               Feed, Horizontal Tab, and Vertical Tab.





Postel                                                         [Page 10]


RFC 661                                                    November 1974


   FTP

      Old File Transfer

         Contact:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)

         Documents:

            McKenzie, A. "File Transfer Protocol," NIC 14333, RFC 454,
            16-Feb-73.

         People:

         Schedule:

         Recent developments:

      New File Transfer

         Contact:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)

         Documents:

            Neigus, N. "File Transfer Protocol," NIC 17759 RFC 542 12-
            July-73.

            Postel, J. "Revised FTP Reply codes," NIC 30843 RFC 640 5-
            June-74.

         People:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)

            Nancy Neigus at BBN (NEIGUS@BBN)

            Ken Pogran at MIT-Multics (Pogran.CompNet@MIT-Multics)

            Wayne Hathaway at NASA AMES (Hathaway@AMES-67)

            Mark Krilanovich at UCSB (Krilanovich@UCSB-MOD75)

            Kurt Barthelmess at UCSD (BOWLES@ISI)

         Schedule:



Postel                                                         [Page 11]


RFC 661                                                    November 1974


         Recent developments:

      Pathnames

         Contact:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)

         Documents:

            Crocker, D. "Network Standard Data Specification Syntax,"
            RFC 645, NIC 30899, Jul-74.

         People:

            Dave Crocker at UCLA-NMC (DCROCKER@ISI)

         Schedule:

         Recent developments:

      File Access Protocol

         Contact:

            John Day (Day. CAC@MIT-Multics)

         Documents:

            Day, J. "Memo to FTP Group: File Access Protocol," RFC 520,
            NIC 16819, 25-Jun-73

         People:

            Ken Pogran (Pogran.CompNet@MIT-Multics)

         Schedule:

         Recent developments:

   Mail

      Current Mail

         Contact:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)




Postel                                                         [Page 12]


RFC 661                                                    November 1974


         Documents:

            page 26 of RFC 454 (see old file transfer).

            Bhushan, A. "Standardizing Network Mail Headers," NIC 18516,
            RFC 561, 5-Sep-73

            Sussman, J. "FTP Error Code Usage for More Reliable Mail
            Service," RFC 630, NIC 30874, RFC 644, 22-July-74.

         People:

            Julie Sussman at bbn (SUSSMAN@BBN)

            Bob Thomas at bbn (BTHOMAS@BBN)

         Schedule:

         Recent developments:

            Concern over the authentication of the author of network
            messages has led to the concept of an authorized mail
            sending process (see RFC 644).

      Proposed Mail

         Contact:

            Postel at SRI-ARC (POSTEL@SRI-ARC)

         Documents:

            White, J. "A Proposed Mail Protocol," NIC 17140, RFC 524,
            13-Jun-73.

            Crocker, D. "Thoughts on the Mail Protocol Proposed in RFC
            524," NIC 17644, RFC 539, 7-July-73.

            White, J. "Response to Critiques of the Proposed Mail
            Protocol," NIC 17993, RFC 555, 27-July-73.

         People:

            Jim White at SRI-ARC (WHITE@SRI-ARC)

            Postel at Sri-ARC (POSTEL@SIR-ARC)

         Schedule:



Postel                                                         [Page 13]


RFC 661                                                    November 1974


         Recent developments:

      RJE - Remote Job Entry

         Contact:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)

         Documents:

            Bressler, B. "Remote Job Entry Protocol," RFC 407, NIC
            12112, 16-Oct-72

            Krilanovich, M. "Announcement of RJS at UCSB," RFC 436, NIC
            13700, 10-Jan-73.

         People:

         Schedule:

         Recent developments:

      RJS - CCNs Remote Job Service

         Contact:

            Robert Braden at UCLA-CCN (BRADEN@UCLA-CCN)

         Documents:

            Braden, R. "Interim NETRJS Specification," RFC 18@ nic
            July-71.

            Braden, R. "Update on NETRJS," RFC 599, NIC 20854, 13-Dec-
            73.

         People:

            Robert Braden (BRADEN@UCLA-CCN)

            Steve Wolfe (WOLFE@UCLAL-CCN)

         Schedule:

         Recent developments:






Postel                                                         [Page 14]


RFC 661                                                    November 1974


      Graphics

         Contact:

            Robert Sproull (SPROULL@PARC-MAXC)

         Documents:

            Sproull, R, and E. Thomas. "A Networks Graphics Protocol,"
            NIC 24308, 16-Aug-74.

         People:

            Robert Sproull (SPROULL@PARC-MAXC)

            Elaine Thomas (Thomas@MIT-Multics)

            James Michener at MIT-DMS (JCM@MIT-DMS)

         Schedule:

         Recent developments:

            New document available from Robert Sproull.

      Data Reconfiguration Service

         Contact:

            Jon Postel at SRI-ARC (POSTEL@SRI-ARC)

         Documents:

            Anderson, B. "Status Report on Proposed Data Reconfiguration
            Service," NIC 6715, RFC 138, 28-April-71.

            Feah, "Data Reconfiguration Service at UCSB," RFC 437, NIC
            13701, 30-June-74.

         People:

         Schedule:

         Recent developments:







Postel                                                         [Page 15]


RFC 661                                                    November 1974


      RSEXEC

         Contact:

            Thomas, Bob. (BTHOMAS@BBN)

         Documents:

         People:

         Schedule:

         Recent developments:

      Line Processor Protocol

         Contact:

            Don Andrews at SRI-ARC (ANDREWS@SRI-ARC)

         Documents:

            [SRI-ARC] <hardy>1pprot.nls

            [SRI-ARC] <hardy>prot.txt

         People:

            Martin Hardy at SRI-ARC (HARDY@SRI-ARC)

            Don Andrews at Sri-ARC (ANDREWS@SRI-ARC)

         Schedule:

         Recent developments:

   PROGRAMS

      Neted - Network Standard Editor [Official]

         Contact:

            Michael Padlipsky (MAP@CASE-10)

         Documents:

            Padlipsky, M. "NETED: A Common Editor for the ARPA Network,"
            RFC 569, NIC 18972, 15-Oct-73.



Postel                                                         [Page 16]


RFC 661                                                    November 1974


         People:

            Padlipsky at MITRE (MAP@CASE-10)

            Postel at SRI-ARC (POSTEL@SRI-ARC0

            Hathaway at AMES (HATHAWAY@AMES-67)

         Schedule:

         Recent developments:

NATIONAL SOFTWARE WORKS

   The National Software Works is developing a set of protocols for its
   use of the ARPA Network, other uses of these protocols is encouraged.

   The procedure call protocol is intended to facilitate the sharing of
   resources in the network at the subroutine level.  The procedure call
   protocol will be used to split nls into a front end and back end
   components.  Procedure call protocol is also to be used in the nsw as
   the basis for communication between the works manager, the tool
   bearing hosts, and front desk procedure packages.

   The documents cited below give a view of the Procedure Call Protocol
   and its use.

      Contact:

         Jim White (WHITE@SRI-ARC)

         Jon Postel (POSTEL@SIR-ARC)

      Documents:

         These documents are the second published version of the
         Procedure Call Protocol and NSW protocol - PCP/NSW Version 2.
         Version 2 is SUBSTANTIALLY different than Version 1; it and all
         intermediate, informally distributed PCP/NSW documents are
         obsoleted by this release.

         The first document, PCP, is the place the interested ready
         should start.  It gives the required motivation for the use
         Protocol and states the substance of the Protocol proper.  The
         ready may then, if he chooses, read the next three documents:
         PIP, PSP, and PMP.  The latter has the most to offer the casual
         reader; the programmer faced with coding in the PCP environment
         should ready all three.  The next three documents - PCPFMT,



Postel                                                         [Page 17]


RFC 661                                                    November 1974


         PCPHST, and PCPFRK - are of interest only to the PCP
         implementer.  The next document - HOST - is a preliminary
         thought about how the NSW might use the standard HOST-HOST
         protocol NCP.  The last four documents - EXEC, FILE, BATCH, and
         LLDBUG - describe procedure packages needed to carry out NSW
         functions, but such packages may well be useful in other
         contexts.

         Version 2 consists of the following documents.  Each is
         available online in two forms: as an NLS file and as a
         formatted text file.  The journal number (e.g., 24459) refers
         to the former, of course and the pathname (e.g., [SRI-ARI]
         <NLS> PCP.TXT) to the latter, accessible via FTP using
         USER=ANONYMOUS and PASSWORD=GUEST (no account required).
         Hardcopy is being forwarded by US Mail to all those who have
         expressed an interest in PCP.  If you don't receive a copy and
         would like one of this and/or future releases, send a note to
         that effect to WHITE@SRI-ARC:

            PCP (24459,) "The Procedure Call Protocol"

               This document describes the virtual programming
               environment provided by PCP, and the inter-process
               exchanges that implement it.

               Pathname: [SRI-ARC] <NLS>PCP.TXT

            PIP (24460,) "The Procedure Interface Package"

               This document describes a packages that runs in the
               setting provided by PCP and that serves as a procedure-
               call-level interface to PCP proper.  It includes
               procedures for calling, resuming, interrupting, and
               aborting remote procedures.

               Pathname: [SRI-ARC] <NLS>PIP.TXT

            PSP (24461,) "The PCP Support Packages"

               This document describes a package that runs in the
               setting provided by PCP and that augments PCP proper,
               largely in the area of data store manipulation.  It
               includes procedures for obtaining access to groups of
               remote procedures and data stores, manipulating remote
               data stores, and creating temporary ones.

               Pathname: [SRI-ARC] <NLS>PSP.TXT




Postel                                                         [Page 18]


RFC 661                                                    November 1974


            PMP (24462,) "The Process Management Package"

               This document describes a package that runs in the
               setting provided by PCP and that provides the necessary
               tools for interconnecting two or more processes to form a
               multi-process system (e.g., NSW).  It includes procedures
               for creating, deleting, logically and physically
               interconnecting processes, and for allocating and
               releasing processors.

               Pathname: [SRI-ARC] <NLS>PMP.TXT

            PCPFMT (24576,) "PCP Data Structure Formats"

               This document defines formats for PCP data structures,
               each of which is appropriate for one or more physical
               channel types.

               Pathname: [SRI-ARC] <NLS>POPFMT.TXT

            PCPHST (24577,) "PCP ARPANET Inter-Host IPC Implementation"

               This document defines an implementation, appropriate for
               mediating communication between Tenex folks, of the IPC
               primitives required by PCP.

               Pathname: [SRI-ARC] <NLS.PCPHST.TXT

            PCPFRK (24578,) "PCP Tenex Inter-Fork IPC Implementation"

               This document defines an implementation, appropriate for
               mediating communication between processes on different
               hosts within the ARPANET, of the IPC primitives required
               by PCP.

               Pathname: [SRI-ARC] <NLS.PCPFRK.TXT

            HOST (24581,) "NSW Host Protocol"

               This document describes the host level protocol used in
               the NSW.  The protocol is a slightly constrained version
               of the standard ARPANET host to host protocol.  The
               constraints affect the allocation, RFNM wait, and
               retransmission policies.

               Pathname: [SRI-ARC] <NLS>HOST.TXT





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RFC 661                                                    November 1974


            EXEC (24580,) "The Executive Package"

               This document describes a package that runs in the
               setting provided by PCP.  It includes procedures and data
               stores for user identification, accounting, and usage
               information.

               Pathname: [SRI-ARC] <NLS> EXEC.TXT

            FILE (24582,) "The File Package"

               This document describes a package that runs in the
               setting provided by PCP.  It includes procedures and data
               stores for opening, closing, and listing directories, for
               creating, deleting, and renaming files, and for
               transferring files and file elements between processes.

               Pathname: [SRI-ARC] <NLS>FILE.TXT

            BATCH (24583,) "The Batch Job Package"

               This document describes a package that runs in the
               setting provided by PCP.  It includes procedures for
               creating and deleting batch jobs, obtaining the status of
               a batch job, and communicating with the operator of a
               batch processing host.  This package is implemented at
               the host that provides the batch processing facility.

               Pathname: [SRI-ARC] <NLS>BATCH.TXT

            LLDBUG (24579,) "The Low-Level Debug Package"

               This document describes a package that runs in the
               setting provided by PCP.  It includes procedures for a
               remote process to debug at the assembly-language level,
               any process known to the local process.  The package
               contains procedures for manipulating and searching the
               process' address space, for manipulating and searching
               its symbol tables, and for setting and removing
               breakpoints from its address space.  Its data stores hold
               process characteristics and state information, and the
               contents of program symbol tables.

               Pathname: [SRI-ARC] <NLS>LLDBUG.TXT

         People:





Postel                                                         [Page 20]


RFC 661                                                    November 1974


         Schedule:

            A demonstration of the National Software Works concept is to
            be performed in July 1975.

         Recent developments:

            The set of documents cited above is available.











































Postel                                                         [Page 21]