¶ Writing & documents

Clear writing in technical documents: sentences, terms, structure

Concrete techniques for understandable technical texts: main point first, short sentences, active voice, consistent terminology, glossary and revision.

A technical document can be correct in every detail and still be useless if its reader cannot work out what they need to know or do. Incident reports, specifications, analysis reports, proposals: in all these texts clarity is not a matter of style but of effectiveness. Information the reader cannot find or misunderstands is the same as missing information.

Writing clearly does not mean simplifying the content. It means removing the obstacles between the reader and the information.

Conclusion first

In work documents readers have little time and want the point straight away. Put what matters most at the beginning, then the supporting details: this is the inverted pyramid structure.

An example, at the start of a report:

Avoid: «On 3 October a report was received concerning slowdowns. Following this report, checks were carried out on the systems, which revealed…»

Better: «The October slowdowns were caused by the mail server's disk being almost full. Space has been freed and the service is back to normal. To prevent a repeat, we propose an automatic alert at 80% usage.»

Anyone who reads only the first three lines already has everything: cause, current status, proposal.

Short sentences, one thing per sentence

A long sentence with three subordinate clauses forces readers to hold too much information in mind at once. When a sentence runs past two lines, ask yourself whether it contains more than one idea. It can often be split into two or three shorter sentences without losing anything.

There is no need to make everything telegraphic: alternating short and medium sentences gives rhythm. But each sentence should carry one main piece of information.

Active voice and clear subjects

The passive voice hides who does what. In technical documents, where responsibilities matter, this is a concrete problem.

Passive or impersonal Active
The update was carried out The supplier updated the system
The check will have to be performed The systems team will check by Friday
An error was detected The nightly check found an error

The passive remains useful when the actor is irrelevant or unknown, but it should not be the automatic choice.

Verbs instead of abstract nouns

Bureaucratic language turns verbs into nouns: «carry out a verification» instead of «verify», «proceed with the replacement» instead of «replace», «give notification» instead of «notify». The text gets longer and heavier without saying more. Hunting for these constructions during revision is one of the quickest ways to lighten a text.

Consistent terms

In narrative writing you try not to repeat words. In technical writing it is the opposite: one thing, one name. If one paragraph talks about a «server», then a «machine», then a «node», readers may legitimately wonder whether they are three different things.

  • Choose one term for each concept and always use it.
  • Define it the first time it appears, if it is not obvious to the audience.
  • For long documents, prepare a glossary of terms and their definitions.
  • Spell out acronyms on first use: «virtual private network (VPN)».

Numbers, units and dates

  • Write numbers and units precisely: «12 GB», not «a dozen gigs».
  • Use an unambiguous date format, especially with people in different countries: «14 October 2026» or «2026-10-14».
  • Always state the time zone for times that concern people in different places.
  • Avoid vague adjectives when you have a figure: «much faster» says less than «from 8 to 2 seconds».

Visible structure

Readers of technical documents rarely read from start to finish: they search. Help them with:

  • informative headings that say what the section contains;
  • short paragraphs, each with an opening sentence that previews its content;
  • lists for sequences of steps or series of parallel items;
  • tables for comparing several options across several criteria.

Use lists in moderation: reasoning with causes and effects is easier to follow in a paragraph than broken into bullet points.

Revise with method

Revision is when a text becomes clear. Some effective techniques:

  1. Let some time pass, even just an hour, before rereading.
  2. Read aloud: overlong sentences can be heard.
  3. Look for empty words: «basically», «in fact», «in order to», «with a view to».
  4. Check one concept, one term with the search function.
  5. Have someone from the intended audience read it and ask them to summarise the main point.

In my work the last step is the most useful: if the reader's summary does not match what I meant to say, the problem lies in the text, not the reader.

In short

  • Put the conclusion and main information first, the details afterwards.
  • Short sentences, one idea per sentence, active voice with clear subjects.
  • Verbs instead of abstract nouns; drop bureaucratic formulas.
  • One concept, one term: definitions, spelled-out acronyms and a glossary.
  • Visible structure and methodical revision, up to a test with a real reader.
MM
Marco Marzaduri

Marco Marzaduri works in cybersecurity, digital forensics and web development. A computer science graduate, he combines rigorous technical analysis with attention to the people who use technology.

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