This documentation contains information for operating Natural in a mainframe environment under various operating systems.

This documentation is organized under the following headings:

Configuring Natural	Describes how to link Natural objects to the Natural nucleus. Provides information on Natural user exits, Natural user access method for print and work files, Natural system files, Natural text modules, Natural configuration tables, and Natural storage management.
Profile Parameter Usage	Provides an overview of the hierarchical structure of the different levels on which Natural parameters can be set. Explains how values can be assigned to profile parameters statically, dynamically and at runtime. Describes how to build a Natural parameter module.
z/OS Environment	Contains an overview of special considerations that apply when you are running Natural under z/OS online or in batch mode. Describes the functions and the operation of the Authorized Services Manager (ASM). Explains the functions of the Natural Roll Server. Provides information on the Roll Server system requirements, operation, performance tuning and restart capability.
z/VSE Environment	Contains special considerations that apply when you are running Natural under z/VSE online or in batch mode.
BS2000/OSD Environment	Contains special considerations that apply when running Natural under BS2000/OSD.
Natural in Batch Mode	Contains considerations that apply when running Natural in batch (Adabas data sets, sort data sets, subtasking session support for batch environments), and specifically when running Natural in batch mode under z/OS, z/VSE and BS2000/OSD.
Natural Buffer Pools	Contains information about the various storage management functions that are available to a Natural administrator under z/OS, z/VSE and BS2000/OSD.
Message Buffer Pool	Provides information on how to start and operate the message text buffer pool.
Optimize Monitor Buffer Pool	Provides information on how to start and operate the Optimize Monitor Buffer Pool.
Natural Swap Pool	Provides information on the Natural swap pool which is available when you are using CICS or openUTM.
System Spool Access	The Write-to-Spool feature enables Natural users to write reports to the system spool directly. It can be used in any Natural environment (Com-plete, TSO, CICS, IMS TM, batch, etc.) and uses the Entire System Server view WRITE-SPOOL. This output may then be processed by any software which expects output in JES or POWER spool (for example, Entire Output Management). This feature applies to z/OS and z/VSE only.
Natural 3GL CALLNAT Interface	Contains information about the Natural 3GL CALLNAT Interface with which Natural enables 3GL programs to invoke and execute Natural subprograms.
Operating the Software AG Editor	Contains information on how to operate the Software AG Editor.
Natural Net Data Interface NATNETTO	Provides information on the Natural Net Data Interface and the net data protocol definition.
Selectable Units for New Natural Features	Provides information on new Natural features supplied as selectabe units.
Natural as a Server	Describes the use of Natural as a Server and the Natural Server Monitor.
Natural Execution - Miscellaneous Topics	Provides information on Natural 31-bit mode support, support and use of Natural and non-Natural objects, input/output devices, double-byte character sets and asynchronous processing.

Notation vrs or vr

When used in this documentation, the notation vrs or vr represents the relevant product version (see also Version in the Glossary).