# Files and editor

> Browse, preview, edit, and save files in the active checkout.

Canonical URL: https://docs.zuse.sh/workspace/files-editor



The files panel shows the active environment's directory tree. Select a file to open it in the main area without losing the conversation tab.

## Supported views [#supported-views]

The editor provides syntax-aware editing for common web and systems languages, including TypeScript, JavaScript, JSON, Markdown, HTML, CSS, Python, Rust, and Go. PNG, JPEG, GIF, WebP, and AVIF files open as image previews.

Use a file's context menu to copy its path or open it in an external editor when available. The tree also marks Git changes so repository state stays visible while browsing.

## Save safely [#save-safely]

Press `⌘S` or use the save command. Zuse checks the file's modification time to avoid silently overwriting a newer external edit. When the file changed on disk, reload or reconcile it instead of forcing an outdated buffer over the new content.

## Add context to a prompt [#add-context-to-a-prompt]

Use `@` in the composer to find a file without navigating the tree. Mention resolution is scoped to the same active checkout, so worktree chats do not accidentally attach the main checkout's version.