Executive Overview

# FMV GRUND-DTD
Executive Overview

FMV Grund-DTD is a content-oriented SGML and HyTime DTD for information modules (modularised technical documentation for operation and maintenance), developed by the Swedish Defence Material Administration (FMV) in order to integrate technical information with other product data in a product model environment.

## Background

The FMV Grund-DTD design team has been lead by Celsius Inforum AB, and consists of representatives from Swedish defence organisations, all experts in their particular field. Earlier experiences as well as external efforts have influenced the development to a great extent.

The DTD has been published and distributed world wide with the intention that others may benefit in the same way as we have of the work of others, and that we will benefit by receiving comments and support for our work.

## Content orientation

FMV Grund-DTD is highly content-oriented in order to provide a markup of the information that is independent of presentation. It has been found that content-oriented markup is the best means of marking up information that will be processed for different objects and presentations, since it simply states what the marked up information really is.

## Information modules

FMV Grund-DTD models the information in modules, which is normally smaller than ordinary documents. Each information module is associated with a physical or functional object, or a function, of a material breakdown structure. It is also limited to one type of information, i.e. description, fault finding, preventive maintenance, maintenance task, test procedure, operation, etc. In a product model, information must be distinct and clearly defined in order to provide efficient access and re-use of information.

The DTD provides a further possibility of dividing the information into information fragments, which may be used to avoid duplication of information, e.g. for standard descriptions and warnings, information on tools and equipment, as well as for version and variant creation and management.

## HyTime

FMV Grund-DTD uses HyTime independent link for all references and relations. The intention has been to provide independent access to the linkends, for updating purposes, without the need of changing the information modules themselves. The HyTime links are used for references, inclusions of data (e.g. from databases), and associations to objects in a material breakdown structure defined elsewhere.

## The future

FMV Grund-DTD will be updated and new functionality will be included as required. Such functionality may include further HyTime functions, IETM functionality and modules for other types of information currently not covered by the DTD.

## STEP and SGML

Due to the strong demand for association with other product data, FMV is also engaged in the possible interoperability between the two standards ISO 10303 STEP and ISO 8879 SGML, and have developed a recommendation for how this may be implemented without compromising either standard.

FMV CALS Office, FMV, S-115 88 STOCKHOLM, SWEDEN

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