The hub for a project's parts: each row opens the right editor for it. Reach it from the Main Menu's Edit item while a document is open.

• Project opens the project editor: name, description, notes and default page size.
• Inputs opens the Form Editor. Autocomplete and Presets sit under it, since they belong to the form.
• Validation and Processing open the Script Editor for validate.js and process.js. Validation is optional: opening it starts an empty script, and saving creates the file.
• Overlays lists your layout files, canvas overlays first (blue icons) and then grid overlays (green icons), each with the same icon as in the Add menu. Each opens the Overlay Editor.
• Images (yellow), Fonts (orange) and PDFs (red) list your files by name, with matching icon colors. They open as previews; see Assets Overview.

Add Asset at the bottom creates a grid or canvas overlay, or adds an image, font or PDF. You can also drag files in. Overlays and assets can be renamed or deleted from their row menu. Rename keeps the file's extension and doesn't update blocks or scripts that name the old file.

The app bar's Open Project button returns to the Input Form. Changes live in the working copy until you Save from the main menu.