Space: child Shift+Space: insert between Tab: sibling Shift+Tab: parent
Double-click empty space: new node
Enter: edit text (Enter again to commit)
Arrows / WASD: jump to nearest node Shift+↑/↓: swap sibling order
Q: auto-fit credit-card ratio E: expand to one line
C: color picker — ← → to choose, Enter to apply (or 1-7)
1-9: jump to that-numbered top-level branch
H: collapse / expand subtree
V: yellow / gray B: Big Mode
Right-click node: color / delete
Backspace: delete ⌘Z: undo ⌘⇧Z: redo ⌘N: new mindmap
Z / X: zoom out / in Scroll: zoom Drag empty canvas: pan
F: focus mode (hide this hint)