DIGITAL


           DEC SNA High Level Language API Tool Kit for OSF/1

           AV-Q76BA-TE

           Dear Customer,

           Thank you for purchasing the DEC SNA High Level Language API Tool
           Kit software (HLLAPI). This package contains the DEC SNA High
           Level Language API Tool Kit Version 1.0 software and documenta-
           tion. Check the bill of materials to be sure that your distri-
           bution kit contains all the items listed. Contact your Digital
           representative if any of the items are missing or damaged.

           Please take a few moments to read the DEC HLLAPI software release
           notes, which can be found on the distribution media in the direc-
           tory /SNH100/documentation. Refer to DEC SNA Access Software for
           OSF/1 Installation Guide for information on mounting and reading
           this directory.

           Features

           The DEC HLLAPI product provides a 3270 Data Stream Programming
           Interface (LU2) between applications running on an OSF/1 system
           and applications running on IBM mainframes through either the DEC
           SNA Peer Server or other DEC SNA gateways using TCP/IP or DECnet.
           The High Level Language API for OSF/1 product is a library of
           routines that are linked into OSF/1 applications.

           The user's C language program is linked against the High Level
           Language API interface library. The user program is the main pro-
           gram in this High Level Language API User Program (HUP). This user
           process communicates with 3270 session manager processes which
           contain the basic 3270 emulation modules. The session manager
           maintains the host sessions and presentation spaces, and controls
           the operator terminal when it is connected to the 3270 display
           emulation.

           DEC SNA HLLAPI features include:

           o  Session selection and operator terminal coordination.

           o  Presentation space data access.

           o  Host session status and control.

           o  Keystroke intercept.

           o  File transfer.

           o  Local session operations.

           o  Direct session data access.

           Refer to the DEC SNA High Level Language API Tool Kit for OSF
           /1 Software Product Description (SPD 62.70.00) for a complete
           description of this product.

 






           Documentation

           The HLLAPI Tool Kit software documentation set includes the fol-
           lowing manuals:

           o  DEC SNA Access Software for OSF/1 Installation Guide

           o  DEC SNA Access Software for OSF/1 Communications Server Admin-
              istrator's Guide

           o  DEC SNA HLLAPI for OSF/1 Programmer's Guide

           If you need to order any additional documentation, please con-
           tact your Digital sales representative or refer to the ordering
           information in the Software Documentation Products Directory.

           Digital prides itself on responding to customer needs. To con-
           tinue serving you, we need your comments. You can use the internet
           address doc_quality@lkg.mts.dec.com to mail comments directly to
           us. There is also a preaddressed, postage-paid Reader's Comments
           form at the back of each manual. If you find errors in a manual or
           want to make comments, please send electronic mail or complete and
           return the Reader's Comments form.






























              ©Digital Equipment Corporation. May 1994. All Rights Reserved.


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