Words on a page: headings, lists, links and notes, a table that adds up, printed on letter or A4.
A tiny office suite where the link is the document. No accounts. Nothing is saved anywhere unless you choose to keep it on this device. Tiny Little Office needs JavaScript to show a document.
Agents: https://office.apps.laspalmas.tech/llms.txt says how to make a document as a link; a document goes inside another as a fence named by its app.