A tour of the window

Split view: sidebar and file list on the left, editor and preview on the right.

The toolbar

From left to right:

• ☰ shows and hides the sidebar (⌘⇧E). Each press cycles through folders and files, files only, and hidden.
• The workspace name. Hover it for the full path.
• The table of contents button lists every heading in the current document; pick one to jump to it.
• The file name, with a dot when the document has unsaved changes.
• Editor / Split / Preview switch the view mode (⌘1, ⌘2, ⌘3).
• ⚙︎ opens Settings (⌘,).

The sidebar

The sidebar shows the folders of your workspace. Select one to list only its files; select the workspace root to see everything again. Drag its right edge to resize it.

The file list

The file list shows the markdown files of the selected folder, with a relative time and the first line of each file. The Filter files box at the top narrows the list as you type; see Finding files.

Below the markdown files, your coding agent’s files (its instruction file such as CLAUDE.md or AGENTS.md, rules, skills, sub-agents, commands) get sections of their own, under the agent’s name. See Your coding agent.

Tabs

Every open document is a tab. Drag tabs to reorder them, close one with its × (⌘W) or a middle click, and press + for a new document (⌘N). See Tabs, saving, and autosave.

Editor and preview

The editor on the left is where you write; the preview on the right renders what you wrote and stays in step as you scroll either pane. Each has its own page: The editor and Live preview.

The status bar

The status bar shows the cursor position and the word and character counts. Other things appear there when they matter: the current keymap or Vim mode, a pulsing AI indicator during a request, an Update to … chip when a new version is available, a licence chip when you are in a trial or read-only, and whether autosave is on.

The Welcome screen

With no documents open you see the Welcome screen: open a folder, open a file, start a new document, or return to a recent folder.