Copyright © 1999 MERANT International Limited. All rights
This document and the proprietary marks and names used herein are protected by international law.
MERANT has made every effort to ensure that this manual is correct and accurate, but reserves the right to make changes without notice at its sole discretion at any time.
The software described in this document is supplied under a license and
may be used or copied only in accordance with the terms of such license,
and in particular any warranty of fitness of MERANT products for any
particular purpose is expressly excluded and in no event will MERANT be
liable for any consequential loss.
Micro Focus® and Animator® are registered trademarks of MERANT International Limited
AAI, Application to Application Interface, CCI, Fileshare, Micro Focus COBOL, Object COBOL, OSX, Professional COBOL and XM are trademarks of MERANT International Limited
3+® and 3Com® are registered trademarks and 3+Open is a trademark of 3Com Corporation
Beame & Whiteside is a trademark of Beame & Whiteside
D-Link and Locus are trademarks of D-Link
DCA® is a registered trademark of Digital Communication Associates, Inc
Digital Research® is a registered trademark of Digital Research, Inc
Extra! is a trademark of Attachmate Corporation
FTP Software® is a registered trademark and FTP TCP/IP and PC/TCP® are registered trademarks of FTP Software, Inc
Hewlett-Packard® and HP® are registered trademarks of Hewlett-Packard Company
IBM®, Operating System/2®, OS/2®, PC®, PS/2® and VTAM® are registered trademarks and CICS, CICS/MVS and CICS/VSE are trademarks of International Business Machines Corporation
Intel® is a registered trademark of Intel Corporation
IRMA is a trademark of Digital Communications Associates, Inc
Lap-Link® is a registered trademark of Traveling Software, Inc
Microsoft® is a registered trademark and LAN Manager, NT, Win32, Windows and Windows NT are trademarks of Microsoft Corporation
Net/One® and Ungermann-Bass® are registered trademarks of Ungermann-Bass, Inc
Novell®, Netware® and LAN Workplace® are registered trademarks and Client32 is a trademark of Novell, Inc
Open Software Foundation is a trademark of Open Software Foundation
Rumba is a trademark of Wall Data, Inc
SCO is a trademark of The Santa Cruz Operation, Inc
Sun®, Sun Microsystems® and PC-NFS® are registered trademarks of Sun Microsystems, Inc
UNIX® and X/Open® are registered trademarks of X/Open Company Limited
Wall Data is a trademark of Wall Data Inc
Western Digital is a trademark of Western Digital Corporation
Wollongong is a trademark of Wollongong
Copyright© 1999 MERANT International Limited
All Rights Reserved
The Micro Focus Object COBOL Programmer's Guides are complete guides to specific areas of the Micro Focus COBOL systems.
This guide contains everything you need to know to use communications with a Micro Focus COBOL system, ranging from system API's to COBOL syntax.
You should be familiar with the COBOL language and with your operating system. You should read the Getting Started book for this COBOL system and be familiar with the COBOL development cycle described in the User Guide before reading other books in the book set.
Micro Focus COBOL systems are available for DOS, Windows, Windows 95, Windows NT, and OS/2 V2.1 or later, and for many varieties of UNIX. Both 32-bit and 16-bit versions are available (16-bit is not available on UNIX.)
Some of the books supplied with this COBOL system are generic across all these environments. Other books are specific to your operating system, but might contain some generic chapters. The chapter Welcome! in your Getting Started book explains this in detail.
In the books, unless otherwise stated:
In a generic book or chapter, text that does not apply to all supported environments and COBOL systems is marked by a side heading in the left margin. A side heading applies to the paragraph it is next to, unless it is next to the first paragraph in a section, in which case it applies to that whole section.
The following examples of side headings show what they mean:
This text applies to the 32-bit COBOL system on UNIX.
DOS, Windows and OS/2:
This text applies to the 16-bit or 32-bit COBOL system on DOS, Windows, Windows 95, Windows NT, and OS/2 V2.1 or later.
This text applies to the 16-bit COBOL system on DOS, Windows, Windows 95, Windows NT, and OS/2 V2.1 or later.
This text applies to the 32-bit COBOL system on UNIX, Windows 95, Windows NT, and OS/2 V2.1 or later.
32-bit for Windows NT and OS/2:
This text applies to the 32-bit COBOL system on Windows 95, Windows NT, and OS/2 V2.1 or later.
The notation used in the books is as follows:
The notation used to describe the format of command lines is as follows:
DOS, Windows and OS/2:
On DOS, Windows and OS/2 you can type them in upper, lower, or mixed case except where otherwise stated.
On UNIX you must type them in upper or lower case as shown.
This book is divided into several parts, as follows: