> ## Documentation Index > Fetch the complete documentation index at: https://docs.docwriter.org/llms.txt > Use this file to discover all available pages before exploring further. # Editor > The Tiptap-based editing surface, with line numbers, find bar, and the inline feedback popup. The editor is a [Tiptap](https://tiptap.dev/) instance over plain text. What you see is the file contents with light formatting (bold, headings, lists, links, inline code). Markdown is the source format, but you don't write markdown markers — you type, and the editor renders structure as you go. For files that aren't markdown (`.tex`, `.txt`, `.bib`, etc.), the editor shows source verbatim without any rendering. ## Line numbers Line numbers appear in a gutter on the left. They reflect the source file, not the rendered prose, so for a `.md` file with a heading and a paragraph the heading is one line and the paragraph starts on line two regardless of how it wraps in the viewport. Useful for talking to the agent about specific lines ("rewrite line 14"), useful for LaTeX, useful when reading the source of anything technical. ## Wrap long lines By default the editor wraps long lines at the viewport edge. The **Settings** menu has a **Wrap long lines** toggle — uncheck it to make long lines overflow horizontally (useful for code files where column position matters). ## Font size **Settings**, **Font size** sets the editor font size. The chosen size persists across sessions. ## Find bar The find bar open at the top of the editor `Cmd/Ctrl+F` opens an in-document find bar at the top of the editor. Type to search; matches highlight in the prose. `Enter` jumps to the next match, `Shift+Enter` steps back, `Esc` closes the bar. The search is scoped to the active tab. The find is intentionally separate from the browser's `Cmd/Ctrl+F`, which would search the page chrome and outline pane too. DocWriter intercepts the keystroke so you always get an in-document search. ## Outline / table of contents Headings in the active tab populate the outline pane on the left. Click a heading to scroll the editor to it. The TOC updates live as you type. Pending agent reviews appear in the **right pane** (the Pending agent edits section), not here. See [Reviewing edits](/agent/reviewing-edits). ## Inline feedback popup Selecting any text (drag, double-click for a word, triple-click for a paragraph, or Shift+arrow) opens the [inline feedback popup](/agent/steering-the-agent#inline-feedback) anchored to the selection. The popup has an auto-focused text input, mode chips (Auto / Edit / Discuss), and one-click pills for common feedbacks plus your recently-typed ones. ## Floating Preview button When a [hook](/automation/hooks) has an `output` field that matches the active tab (e.g., a `pdflatex` hook whose output is `main.pdf` and the active tab is `main.tex`), a **Preview** button appears at the top-right of the editor. Clicking it opens the rendered artifact in a popup window. See [Live preview](/automation/preview).