ChiWriter
Chiwriter
ChiWriter was a scientific word processor for MS-DOS, created by Cay Horstmann and released commercially in 1986.
It was one of the first WYSIWYG word processors that could write mathematical formulas, even on IBM PC XT computers. It was easier to use than TeX. It was relatively affordable and ran on personal computers, unlike TeX, which ran on expensive Unix computers.
ChiWriter was discontinued in 1996.
Since then, Horstmann has placed the ChiWriter executable in the public domain.
The source is unpublished.
Operation
ChiWriter let a user write text that was subscripted or superscripted with respect to the current text line (above or below, by half the base line height). This text was treated as part of the core line, enabling complex formulae, such as fractions. It supported up to 20 fonts simultaneously, including fonts with Greek, Cyrillic, and mathematical symbols. Users could combine symbols to create larger objects, such as sums and integrals.
“ChiWriter” enters the record as chiwriter. Crown Archives preserves that source wording while asking what ChiWriter and Chiwriter can confirm, complicate or overturn.
Why this record matters
“ChiWriter” is worth following because a concise public description often conceals a longer documentary argument. Here, ChiWriter and Chiwriter provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jun 12, 2026. The linked authority identifier is Q4036102. The first chronological checks are 1986 and 1996.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “ChiWriter”, its source revision and the description used here.
- Expand the search: follow ChiWriter primary sources, ChiWriter archive and ChiWriter research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “ChiWriter”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “ChiWriter” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.