Every command below is also in the menu bar, under the menu named in each heading. Keys without a modifier, such as Tab and Return, act on the map only while no title is being edited; while you type, they do what they do in any text field.
Adding branches (Node menu)
Shortcut
Command
Tab
New Child
Return
New Sibling. On the central topic it adds a child.
⌥Return
New Sibling Above
⇧Return
New Main Node, a second topic beside the central one
⌥Tab
New Parent, a branch inserted above the selected one
Editing (Node and Edit menus)
Shortcut
Command
⌘Return
Edit Title
Esc
End Editing
⇧Return while editing
Line break inside the title
⌫
Delete, with everything below the branch
⌥⌫
Delete, Keep Children
⌘Z
Undo
⇧⌘Z
Redo
⇧⌘T
Toggle Task: no checkbox, open, done, and back to none
Space
Tick Task
⇧⌘L
Connect the last two selected branches
/
Commands: search every command by name
Text formatting (Format > Font)
These work on the title you are editing and on text in the document pane. With branches selected and no text being edited, ⌘B and ⌘I format the selected branches.
Shortcut
Command
⌘B
Bold
⌘I
Italic
⇧⌘X
Strikethrough
⌃⌘C
Code
⌘K
Add Link…
Copy and paste (Edit menu)
Shortcut
Command
⌘C
Copy the selected branches with everything below them
⌘X
Cut
⌘V
Paste branches, or a picture onto the selected branch
⌥⌘C
Copy as Markdown
⌥⌘V
Paste as Markdown
⌘F
Find in the map
Copy as PDF and Copy as PNG are in the Edit menu without a shortcut. See Copy and paste.
Selection (Selection menu)
Shortcut
Command
← → ↑ ↓
Select the next branch in that direction
⇧← ⇧→ ⇧↑ ⇧↓
Extend the selection in that direction
⌘A
Select All
⇧⌘A
Deselect All
⌥⌘A
Select Children
Organizing (Organize menu)
Shortcut
Command
⌘↑
Move Node Up among its siblings
⌘↓
Move Node Down among its siblings
⌘←
Outdent
⌘→
Indent
⌥.
Toggle Fold
⌥⌘.
Fold Siblings
⌃⌥.
Unfold One Level
⌥:
Unfold All
⇧⌘F
Toggle Focus Mode, which dims everything outside the selected branch
View (View menu)
Shortcut
Command
⌘+
Zoom In
⌘-
Zoom Out
⌘0
Actual Size
⌘9
Zoom to Fit
⇧⌘8
Center Selection
⌥⌘E
Show Editor, the document pane
⌥⌘I
Show Inspector
⌘[
Back to the previous map
⌘]
Forward
While you drag a branch
Key
Effect
Esc
Cancel the drag; nothing changes
Space
Drop the branch where the preview shows it, without waiting for the mouse button