There are 6 recognised classes of ETM ranging from
non-indexed page images (scanned) to an integrated database information
system.
Class 0. Non-Electronically-Indexed Page Images
(Not an ETM) - Systems of digital page images that are intended for
electronic archival filing or Print-on-Demand. Pages can be viewed in
an electronic display but have no index for navigation through the document
for the purpose of online usage.
Class 1. Electronically Indexed Page Images - Systems
of digital page images intended for full-page display. Automatic intelligent
indexing allows navigation to the page images for user access. These
systems can be used in a library or reference setting for reading and
research use. They can be printed directly.
Class 2. Electronic Scrolling Documents - Systems
for interactive display of ASCII-based documents using intelligent indexing
and Hypertext tags inserted into a tagged document file. This type of
document is generally the result of a simple conversion from a page-oriented
document with the addition of Hypertext tags. This allows navigation
of the document by the user, however, content driven NEXT function and
author inserted navigation aids are very limited, if any.
Class 3. Linear Structured IETPs - Interactive display
of technical information which is in SGML format to the maximum extent
possible and using a Hypertext presentation system for display. Rather
than being based on a hierarchically based database, it is based on
a linear SGML document file. Navigation is based on content driven logical
NEXT function and author developed constructs employing prompted dialog
boxes.
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Class 4. Hierarchically Structured IETPs - System
for interactive electronic display of technical information specifically
authored into and maintained in a relational or object-oriented hierarchical
database with no redundancy of data. The data is then packaged as a
run-time database for interactive presentation (IETP).
Class 5. Integrated Database IETIS - Integrated
electronic technical information system for interactive presentation
of Class 4 IETPs integrated in with data for other processes and systems
for information display and user-applications such as computer aided
training or fault diagnostics.
Software
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