microcontent.org
The words that decide whether software gets used are almost never in the documentation. They are on the button, in the error message, above the empty state, and somebody wrote them in four minutes.
Microcopy is now a recognised specialism with practitioners, conferences and a body of research, and it has no central resource. That is the gap.
The term microcontent is older and broader, coined in information design for the small units carrying disproportionate weight: headlines, labels, summaries, previews. It has since stretched to cover short-form posts and cards.
On this extension the educational and professional-body readings come forward, which suits a standards resource, a research project or a practitioner community rather than a product.
One compound word, no hyphen, entirely phonetic, and a prefix that describes a structural feature of reading rather than a passing format.
Enquiries welcome.