The editor

The editor is where the book gets written. It is a continuous canvas: every chapter is its own cream sheet at your real trim width with your real margins, stacked in order, and you scroll between them.

It is deliberately pageless. Live per-page reflow while you type needs a custom layout engine, and the approximations look right until they matter. So the draft flows, and exact pages are shown by a real typesetter on demand.

The three views

• Write — the continuous draft canvas. Where you spend your time.
• Split — one chapter beside its live typeset pages. For fine-tuning.
• Page view — the full typeset chapter. This is the print-true reference. What you see here is what the PDF contains, because it is the same engine.

Split and Page view are hidden on phones, where there is no room for two columns.

The formatting ribbon

Paragraph style · font size · font family · history · bold, italic, underline, strike, code, superscript, subscript · text colour and highlight · lists · alignment · links, images, tables, scene breaks and page breaks · clear formatting.

Table controls appear only when the caret is inside a table.

Everything the ribbon can do is styled identically in the editor and in the printed PDF. That is the point of the constraint: the toolbar has exactly the tools the print pipeline knows how to set.

⤓ Page break forces a new page, and the export honours it exactly.

The chapter rail

Chapter list, with the active chapter marked. Click to jump to its sheet. ▲▼ reorder the active chapter.

Each chapter carries a goal and a synopsis.

The synopsis is worth filling in. When a chapter has one, it replaces the auto-generated excerpt in the "story so far" that later chapters are written against — your account of what happened, verbatim, instead of a machine's guess. It is also cheaper, which means more of the context budget goes to the writing.

On narrow screens the rail becomes a slide-over drawer.

Word count and statistics

The toolbar's word count is a button. Behind it: book words against your target, chapters complete, and words written this session.

The overflow menu

On narrower screens the occasional tools collapse into ⋯ — view mode, format, zoom, history, find & replace, codex and the model picker — leaving one row of what you actually use while writing. Everything is still there; nothing is removed, and the enhance button keeps its credit estimate at every width.

Autosave

Continuous, debounced, to the cloud. The save status sits in the header.

Several things protect the work:

• Failed saves retry with backoff, and a banner appears if they keep failing.
• Closing the tab with unsaved changes warns you.
• A crash buffer is written locally on trouble and offered back next time you open the book.
• If the same book is edited in two places at once, the second save is refused rather than allowed to clobber the first, and the app offers to reload.

What to watch for

• On a phone, the Write canvas is not print-true. Margins are clamped so the text stays readable at 390px. Page view remains the reference.
• Off-screen chapters are not live editors until you scroll near them. This is what keeps a forty-chapter book responsive; the rendering is identical, so you will not see it happen.