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ASD-STE100 Simplified Technical English
Can STE be used for oral communication?
STE was developed for technical documentation only. But the rules and a controlled dictionary can
help oral communication in meetings and presentations.
Can STE be used to teach a writer English?
No. STE is not an English course book. STE will help the writer give complex information in a form
that is easy to understand. Writing clearly is a complex task, and it is necessary to have a high
level of fluency in English to write STE correctly.
Can STE help technical translation?
Yes. One of the primary objectives of STE is to make translation easier. If the permitted words, the
meanings of such words, and the types of sentence constructions in a text are controlled, the
difference between texts will decrease to a minimum. Thus, it is easier for translators, neural
machine translation engines, and Large Language Models (LLM) to translate text written in STE
into the target language.
Can writers get training in STE and find supporting authoring tools?
There are organizations, companies, and individuals that market and give training courses in how
to use STE, and there are producers of authoring tools that support STE.
Neither ASD, the Simplified Technical English Maintenance Group (STEMG), nor any organization
or company associated with the production of STE intend or imply any warranty or endorsement to
these organizations, companies, and individuals that give training or produce authoring tools.
For training only, the above statement is not applicable to organizations, companies, and
individuals who, through official agreements, are accredited by ASD to give authorized training.
For more information, refer to the STEMG website at www.asd-ste100.org.

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ASD-STE100 Simplified Technical English
History of ASD-STE100
The first release of STE was as the AECMA Simplified English Guide, PSC-85-16598.
This is the full list of all released issues, revisions, and changes.
Release Identification Scope
date
1986-02-15 First release The guide included writing rules (part 1) and the dictionary (part 2)
1986-09-15 Change 1 Guide revised
1987-06-01 Change 2 Examples of function words and nouns (part 3) added
1988-06-15 Change 3 Examples of verbs (part 3) added
1988-12-30 Change 4 Examples of adjectives and adverbs (part 3) added
1989-12-01 Change 5 Reformatted version of change 4. No changes to the content
1995-09-15 Issue 1 Guide fully revised. Original part 2 removed and part 3 became part 2
1998-01-15 Issue 1, Updates and amendments
Revision 1
2001-01-15 Issue 1, Updates and amendments
Revision 2
2004-01-15 Issue 2 Guide fully revised
2005-01-15 Issue 3 New issue released as ASD-STE100. No changes to the content
2007-01-15 Issue 4 Specification revised
2010-04-15 Issue 5 Specification revised
2013-01-15 Issue 6 Specification revised
2017-01-25 Issue 7 Specification fully revised, primary focus on the writing rules (part 1)
2021-04-30 Issue 8 Specification revised, primary focus on the dictionary (part 2)
2025-01-15 Issue 9 New issue released as a standard.
Primary focus on harmonization of terminology with ISO standards
Maintenance of ASD-STE100
The ASD Simplified Technical English Maintenance Group (STEMG) is responsible for the
development, production, publication, maintenance, and management of ASD-STE100.
The group primarily includes experts from ASD countries, along with an international team of
experts from countries that are not members of ASD. There are also national and multi-country
STE Support Teams (STEST) that assist the STEMG in its work.
For more information, refer to www.asd-ste100.org.
Distribution of ASD-STE100
ASD-STE100 is available free of charge to all writers and users through the STEMG website
www.asd-ste100.org or ASD-STAN www.asd-stan.org. Unauthorized distribution of ASD-STE100,
direct or through different websites or portals, is strictly prohibited without written permission from
the STEMG.
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ASD-STE100 Simplified Technical English
Change forms
STE is a living language. For its continuous improvement, feedback from users is necessary. Users
can give their feedback through a change form (refer to the example on the next page), which is
also available in electronic format on the STEMG website.
Use this change form to write your change request, comments, or recommendations. Then, send it
to stemg@asd-ste100.org, to a national coordinator, or an associate expert of the STEMG. For
more information, refer to www.asd-ste100.org.
The STEMG has records of all change forms and their assessments. The change forms are
discussed in STEMG meetings, and the next issue of ASD-STE100 will include the agreed
changes. The STEMG usually sends information to the originators of the change forms about the
related STEMG assessments and decisions.

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ASD-STE100 Simplified Technical English
Change form for
ASD-STE100 Simplified Technical English
Use this change form to write your change request, comments, or recommendations. Then, send
it to stemg@asd-ste100.org, to a national coordinator, or an associate expert of the STEMG. For
more information, refer to www.asd-ste100.org.
Writing rule or dictionary word:
Change that you think is necessary:
Purpose of the change:
For dictionary words only, suggested approved meaning or suggested alternatives:
For dictionary words only, example(s) of how to use the word.
If it is possible, give sufficient examples from your documentation to support your proposal:
Sent by: Date:
Company or organization:
Email:
ASD STEMG assessment and decision: Date:
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