> ## Documentation Index > Fetch the complete documentation index at: https://docs.mossx.ai/llms.txt > Use this file to discover all available pages before exploring further. # Learn the interface > Walk the desktop window by area: Home, Extensions, sessions, chat, file tree, Git, terminal, search, and Settings. The desktop app is a full window, not a plugin sidebar. Learn where things live first. How to use each area is on the pages that follow. ## Home Launch opens Home. You can: * Search or pick an existing project * **Add project** * See branch / worktree info Home: choose or add a project Selecting a project opens the main window. ## Extensions In the left bar, click **Extensions** (same level as **Home**). The center becomes a top bar: Usage, AI frameworks, Skills, Mcps, and more. Extensions entry in the left bar and the top bar Usage opens by default. You can keep managing Skills / Mcps. The other top-bar entries are not shipped yet. Details: [Extensions](/en/desktop/extensions). ## Main window Typical layout, left to right: | Area | What it is | | -------------- | -------------------------------------------------------- | | Sidebar | Session list, project switcher | | Center | Chat canvas and input | | Right / bottom | File tree, Git, terminal, search, Plan, and other panels | | Top bar | Search, Settings, window controls | Main window overview You can drag panel width and height. The layout is remembered. The next sections look at each area. ## Session list The left sidebar lists sessions for the current workspace. You can search, star, rename, delete, or start a new session. Sidebar session list Details: [Sessions and history](/en/desktop/chat/sessions). ## Chat canvas The center is the current session: messages, thinking, tool calls, and diffs. The input sits at the bottom. Chat canvas The bottom of the input switches provider, model, and mode. Input and bottom pickers Details: [Chat area](/en/desktop/chat/overview) and [Input](/en/desktop/chat/input). Permission modes: [Modes and permissions](/en/desktop/chat/modes). ## File tree Browse files in the current workspace. You can preview, rename, or drag a file into the input. File tree Details: [Workspace and panels](/en/desktop/workspace/overview). ## Git panel Review changes, stage, commit, and browse branches and history. You can also generate a commit message with AI. Git panel Details: [Git and commit](/en/desktop/workspace/git). ## Terminal Open a terminal inside the app so you do not switch to an external window. Use it to run commands while you watch AI output. Terminal panel Details: [Workspace and panels](/en/desktop/workspace/overview). ## Global search One search box covers files, sessions, history messages, skills, and commands. Global search Details: [Workspace and panels](/en/desktop/workspace/overview). ## Settings After you open Settings, entries are on the left and the matching form is on the right. Providers and CLIs live under **CLI configuration**. Settings sidebar Full map: [Settings overview](/en/desktop/settings/overview). ## Next steps Messages, thinking, tool calls, and status. `@`, `/`, attachments, and the bottom pickers. File tree, terminal, search, and Plan. Changes, commits, and AI commit messages. Usage, Skills, and MCP.