> ## Documentation Index > Fetch the complete documentation index at: https://docs.glassine.ink/llms.txt > Use this file to discover all available pages before exploring further. # Glassine > A quiet Markdown writing app for macOS. An essay open on a sheet of dark glass, the library in a sidebar on the left Glassine is a place to write. The window is a sheet of translucent glass over whatever is behind it. The caret glides instead of jumping. Your documents are plain Markdown files in iCloud Drive, saved as you type, and a Craft-style sidebar hides with one key. It is a native Mac app, Swift from top to bottom, with no accounts, no analytics and nothing sent anywhere. The source is [on GitHub](https://github.com/a-libre/glassine) under the MIT license. *Glassine is the thin, translucent paper used to protect prints.* ## Where to begin The Mac App Store, a direct download, or a build from source. The window, the sidebar, and the keys worth learning first. Every key, on one page. The little things that move, and where to find them. ## What it does, in one screen each Focus mode with typewriter scrolling Review mode in the Glass style All Documents, the mosaic view Timelapse, the corridor of daily notes ## The short version * **Glass.** The window is a blur of what is behind it, tinted by the theme. Nine built-in themes, dark by default; make your own with live preview and export it as JSON. * **A smooth caret.** The insertion point glides between positions. Speed, blink style and width are yours to set. * **A library, not a file picker.** Documents live in `iCloud Drive/Glassine` as `.md` files and folders. ⌘N makes one; it takes its name from the first line as you write. * **Autosave** half a second after you stop typing, and at least every few seconds while you type. * **A sidebar** with Recents, Starred, folders, tags and a Shelf, shown and hidden with ⌘S. * **All Documents** (⌘1): a mosaic of every document with rendered previews, navigable with the arrow keys. * **Review** (⌘↩): the document rendered as a page in one of five styles. * **Typewriter scrolling, focus mode, word count and reading time.** * **Markdown, lightly styled.** Syntax stays visible but steps back. * **Copy the whole document** as Markdown (⌘⇧C) or rich text (⌥⌘C); export it as a PDF (⌘⇧E).