Writing aids in the editor
Everything here works on the sentence in front of you, right now — as opposed to the analysis tools, which report on the book as a whole. Three correction tools, a way to comment on a passage, and a record of which words were whose.
Writing Tools
Apple's own on-device rewrite panel — Proofread, Rewrite, Friendly, Professional, Summarize and the rest — reachable from the toolbar's Writing Tools button, the Edit menu, or right-clicking a selection. Nothing leaves your Mac.
Antidote
A separate, licensed French/English grammar and style checker (Druide's Antidote) you install and purchase yourself. When it's found, the toolbar's Antidote menu opens its Corrector, Dictionaries or Guides against the focused chapter or scene; the button greys out rather than disappearing when it isn't installed.
[[character:ada-marsh|Ada
Marsh]] down to what you actually typed — is masked before the text
reaches Antidote, so it reads "Ada Marsh" like any other word rather than
seeing a slug and a UUID as part of your sentence. Nothing in the real
manuscript changes; the masking exists only for the copy Antidote reads.
Harper
An offline grammar-and-style checker that runs entirely in-process via WebAssembly — your prose never leaves this Mac, which is worth knowing if you're writing about sensitive material. It ships bundled inside Sgeulai, so there's nothing to install; turn it on under Settings ▸ Grammar & Style and it's ready.
Once it's on, Check Grammar and Style with Harper — the checkmark icon in the editor toolbar — shows or hides the side panel where findings actually live. Checking runs continuously while that panel is open, picking up again shortly after you stop typing, rather than being something you trigger by hand each time.
Sgeulai never underlines a Story Bible name as a misspelling — every character, location and other record name is added to Harper's dictionary automatically. A dialect picker (American, British, Canadian, Australian) covers the rest of your own spelling.
Each finding in the panel is a card: what it flagged, why, and up to four one-tap suggestions — clicking one applies it immediately, no separate confirm step. A spelling flag also offers Add to Dictionary, which accepts the word everywhere from then on. Clicking a card itself (not a suggestion) jumps you to that spot in the prose rather than fixing anything — useful for reading a flag in its actual context first. To stop seeing a whole category of finding, turn it off under Settings rather than dismissing findings one at a time — there's no per-finding ignore.
Comments
Select a passage, right-click, and choose Comment on Selection to leave a margin note anchored to it. A comment survives the passage being edited around it — it re-finds its anchor by the text it was attached to, and if that text is ever cut entirely, the comment says so rather than silently vanishing or pointing at the wrong place.
The comments panel itself is shown or hidden with the speech-bubble toggle in the editor toolbar — a yellow badge on it counts however many comments are still open. Adding a comment opens the panel automatically, so you never lose track of one you just wrote.
A comment's body is the same wikilink-aware field as everywhere else in the app — see Wikilinks and backlinks. A comment that links to a character or a note becomes a real, bidirectional connection, visible from that record's own Connections tab.
How AI-edited passages are tracked
With Highlight AI-edited text on (Settings ▸ Writing Aids), a passage Writing Tools rewrote is shaded pink and flagged with an "AI-edited" badge in the corner. The badge names how many passages are marked and, right beside the count, what share of this chapter or scene's own words that comes to — a section rewritten twice over reads differently from one with a single sentence swapped, and the percentage is what tells them apart at a glance. The same badge's menu is where you clear the marks once you've reworked a passage by hand.
The app also watches for AI text arriving a second way: pasted in from a chatbot. Two independent signals catch this without you doing anything — a browser copy carries the page it came from, and copying from the ChatGPT or Claude desktop apps is recognised by which app was frontmost when the clipboard changed. When neither signal is present but a large paste clearly happened anyway — most often because it went through a chatbot's own in-page Copy button, which strips that information — a small prompt asks whether to mark it AI rather than guessing either way.
All of this is controlled from Settings ▸ Writing Aids, and every toggle there can be turned off independently — see Settings reference.
The AI Provenance Report
Export ▸ Export AI Provenance Report… generates a PDF breaking down how many words in the manuscript carry each kind of AI mark — Writing Tools, a pasted chatbot passage, one you confirmed by hand — as a share of the whole book, with a plain-language explanation of what each category means.
Underneath the summary, a Marked Passages section quotes every marked span verbatim, in reading order, chapter by chapter and scene by scene — not just a total, but the actual sentences the total was built from, which is what makes the report something you can hand to an editor or a publisher and have them check for themselves rather than take your word for it.
The same figures are also live, without exporting anything — Statistics… in the Tools menu has its own AI-Assisted Content section, scoped by whichever manuscript(s) that dashboard's own picker has selected. See The Tools menu.