The Window

The menu bar sits at the very top of the window, above the main toolbar and the document tab strip. Four pull-down menus, in this order: File (tooltip: "File operations"), Edit (tooltip: "Edit operations"), Window (tooltip: "Switch panels") and Help (tooltip: "Help and about").

File menu

Three groups, in this order: Graph, Node Sharing, Application.

Opening a file that is already open in another document tab does not open a second copy - it focuses the existing tab and shows the toast Already open: {filename}. Opening one of the shipped example graphs, from anywhere including Open... or Recent Files, never opens the shipped file in place - see the Welcome screen section below.

Recent Files submenu

Recent Files lists up to five entries, newest first. Each row's label is the file's plain filename; its tooltip is the full absolute path. Clicking a row opens that file. If the file no longer exists, the app removes it from the list and shows the toast File no longer exists: {full path} - the list prunes itself rather than leaving dead entries behind. A file is added to the list both when it is opened and when it is saved, and reopening a file already in the list moves it to the top instead of duplicating it. When the list is empty, it shows a single, permanently disabled entry: No recent files.

This is the same list that fills the Welcome screen's Recent files column (see below).

Edit menu

Four groups: Selection, Clipboard, Organize, Application. Shortcuts are rebindable in Settings; the defaults are listed below.

Window menu

One group, Panels. All five entries are check-box toggles whose tick reflects whether that panel's tab is currently open. None of them has a tooltip.

Target Viewport is deliberately absent from this menu. It manages itself and cannot be closed - see Panels. The Window menu is the only in-app way to reopen a panel you closed, aside from three gestures that auto-foreground one: activating a tool foregrounds Details, clicking a document tab foregrounds Graph, and a viewport capture foregrounds Viewport.

Help menu

Eight entries, no section headings.

Main toolbar

A slim toolbar directly under the menu bar, in two sections separated by a divider. No button is ever disabled, and none has a keyboard shortcut.

Document tab strip

A separate row, below the toolbar, listing open .mmgraph documents - not panels.

• The tab label is the document's display name, bold when active. An asterisk * is appended while the document has unsaved changes.
• The active tab gets a thin accent-coloured bar underneath it.
• Clicking a tab foregrounds the Graph panel (reopening it if it is closed), then switches documents.
• The x close button closes that document. Tooltip: "Close this graph"
• The + button, at the trailing end of the strip, opens a new untitled document. Tooltip: "Open a new graph in a tab"

A new tab's name is decided in this priority order: an explicit title if one was given, otherwise the graph's stored display name (from the .mmgraph file), otherwise the file's base name, otherwise Untitled-N, where N increases by one for each new untitled tab in the session.

Closing the last document does not leave you with nothing - a fresh untitled document is created automatically.

Switching tabs while a tool has unbaked edits prompts you first:

You have unsaved tool edits on the current node.

Yes - accept and bake the changes before switching.
No  - discard the changes and switch.
Cancel - stay on this tab.

A similarly shaped prompt appears when closing a document or the app instead - see Files, Autosave and Recovery.

Welcome screen

The Welcome screen opens automatically at startup, unless you have ticked Don't show this again, and it never appears when the app was launched by double-clicking a .mmgraph file. It waits behind any startup modal (such as a graphics-device warning) before appearing. Reopen it any time with Help > Welcome.

It has two columns.

Start from an example (left column) lists one scrollable button per shipped example, its title in bold and its description underneath. Every button carries the same tooltip:

"Copies the shipped example into your Starters folder and opens the copy. The original in the app's Resources folder is never touched, and clicking again gives you another fresh copy rather than reusing the one you have been working in."

Below the list, a Browse the example files... button is visible only when the shipped .mmgraph files are actually on disk. It is the only button in the dialog that does not close it; its tooltip: "Shows the folder holding the example graphs as ordinary .mmgraph files, so they can be read, copied or shared. It is part of the installation, so treat it as read-only - open an example from the list above to get an editable copy."

Recent files (right column) mirrors the same list as File > Recent Files. When it is empty, it reads "Nothing yet. Graphs you open or save show up here." Otherwise it lists one button per recent file - filename in bold, folder underneath, full path in the tooltip - and clicking one goes through the same self-healing path as the menu entry. A bottom button, Open other graph... (tooltip: "Browse for a .mmgraph file."), closes the dialog and opens the normal Open dialog instead.

The footer holds three controls: