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Co-Writer

Co-Writer is a Markdown workspace for notes, reports, tutorials, and study drafts. Its defining idea is surgical editing: instead of regenerating your whole document, the agent edits the text you select — and shows the change as a diff you approve.

Where it is

Section titled “Where it is”

Open Co-Writer from the left sidebar (or visit /co-writer). The landing page lists your drafts; create one with New draft, or start from a structured From template.

The Co-Writer landing page: draft cards with a New draft and From template button

The editor

Section titled “The editor”

Open a draft to get a split workspace: the Markdown source on the left, a live preview on the right. Math renders with KaTeX, and diagram fences render as diagrams, so the preview is a faithful picture of the finished document as you type.

The Co-Writer editor: Markdown source on the left, live rendered preview on the right

ControlWhat it does
Editor / PreviewWrite Markdown on the left; see headings, bold, tables, code, math, and diagrams rendered on the right.
Sync ScrollKeep both panes aligned as you scroll.
Model chipChoose which model runs AI edits for this document.
Full DiffReview every AI change as an accept/reject diff before it lands.
ShareExport or share the finished draft.

AI edits, grounded and surgical

Section titled “AI edits, grounded and surgical”

Select a span of text and ask the agent to rewrite, expand, or shorten it. The edit agent receives the selection, your instruction, the surrounding document, and — optionally — context from a knowledge base or the web. That makes Co-Writer good for:

  • tightening an explanation without disturbing the section structure,
  • expanding terse bullet points into a teaching paragraph,
  • shortening a long draft before saving it as a notebook,
  • grounding a claim against a selected KB or a web source.

Because nothing changes until you accept the diff, you stay in control of the document at all times.

Section titled “Recommended workflow”
  1. Draft roughly in Markdown — don’t polish yet.
  2. Select only the paragraph that needs help.
  3. Run Rewrite, Expand, or Shorten (add a KB or web grounding if the claim needs it).
  4. Review the Full Diff and accept or reject.
  5. Save polished notes into a Notebook when they should become durable, reusable context.

Storage

Section titled “Storage”

Co-Writer documents live under the active user workspace, so multi-user deployments keep each user’s drafts isolated. Partners can use notebook/skill resources copied from a user’s library, but they do not edit a user’s Co-Writer drafts.

See also

Section titled “See also”