Keyboard shortcuts

The app binds JupyterLab's notebook shortcuts plus a few of its own. To see them in the app, press H in command mode, click the keyboard button in the toolbar, or choose Help › Keyboard Shortcuts in the Mac app. In the Mac, iPad and iPhone apps they are in Settings › Shortcuts, where H and Help › Keyboard Shortcuts take you.

Command mode is when a cell is selected but not being edited (press Esc to get there); edit mode is when the cursor is in a cell (press Enter). Single-letter shortcuts such as M (make the cell Markdown) work only in command mode; in edit mode they type the letter. The sheet says this too, and the toolbar's cell type picker changes a cell's type with the mouse.

Command palette

⇧⌘P (Ctrl+Shift+P on Windows and Linux) opens the command palette: every command in the tables below that works outside a cell editor, plus New Notebook, Save, Rename…, Download, Publish as Web Page…, Export as Markdown, Export as Script, Trust, Run All, Run with Parameters…, Clear All Outputs, Interrupt, Restart, a Change Kernel entry for each kernel, and the notebooks you opened recently. Type to filter, use ↑ and ↓ to pick, ↩ to run, and Esc to close. Rename… asks for the new name in the same field. The toolbar's command button opens it too (handy on a touch screen), and the Mac app has View › Command Palette…. Firefox keeps Ctrl+Shift+P (⇧⌘P) for a private window, so there use the toolbar button or rebind the palette in the Shortcuts sheet. In the Mac app the menu's ⇧⌘P stays as it is when you rebind it.

On a touch screen

While you edit a cell with the on-screen keyboard (an iPhone, or an iPad without a keyboard attached), a bar above the keyboard has Run (run and advance, Shift+Enter by default), esc, tab, the four arrows, and the symbols code needs most. tab, esc and the arrows do what the keys do: tab completes or indents, esc leaves edit mode. Swipe the bar sideways for more symbols.

On a touch screen, code in cells is 16 pixels, larger than elsewhere, so that iOS doesn't zoom in when you start editing a cell.

Changing a shortcut

Every shortcut can be rebound in the same sheet. On a row, + records a keystroke to add, × removes a binding, and Reset puts the row's defaults back; Reset All clears every change. Outside command mode, a single character (with or without Shift) types into the cell, so the sheet asks for ⌘, ⌃ or ⌥ (Ctrl or Alt elsewhere) with it, and it refuses a binding another shortcut already has where both could fire.

Changes are kept in the browser's local storage (ganymede-ui:shortcuts), so they belong to one browser and one origin: the same app served from another address starts with the defaults. The Mac and iPad apps keep their origin across launches, so changes there last.

Defaults

Notebook

Action	Mac	Windows, Linux
Run cell, select below	⇧↩	Shift+Enter
Run cell	⌘↩	Ctrl+Enter
Run cell, insert below	⌥↩	Alt+Enter
Find	⌘F	Ctrl+F
Find next	⌘G	Ctrl+G
Find previous	⌘⇧G	Ctrl+Shift+G

Command mode

Action	Mac	Windows, Linux
Edit cell	↩	Enter
Select cell above	↑, K	Up, K
Select cell below	↓, J	Down, J
Extend selection above	⇧↑, ⇧K	Shift+Up, Shift+K
Extend selection below	⇧↓, ⇧J	Shift+Down, Shift+J
Select all cells	⌘A	Ctrl+A
Insert cell above	A	A
Insert cell below	B	B
Delete cells	D D	D D
Cut cells	X	X
Copy cells	C	C
Paste cells below	V	V
Undo cell operation	Z	Z
Redo cell operation	⇧Z	Shift+Z
Move cells up	⌃⇧↑	Ctrl+Shift+Up
Move cells down	⌃⇧↓	Ctrl+Shift+Down
Change to code	Y	Y
Change to Markdown	M	M
Change to raw	R	R
Collapse code	⌘⌥[	Ctrl+Alt+[
Expand code	⌘⌥]	Ctrl+Alt+]
Collapse all code	⌘⌥⇧[	Ctrl+Alt+Shift+[
Expand all code	⌘⌥⇧]	Ctrl+Alt+Shift+]
Show keyboard shortcuts	H	H

Edit mode

Action	Mac	Windows, Linux
Leave the cell (command mode)	Esc, ⌃M	Esc, Ctrl+M
Complete	⇥	Tab
Show documentation	⇧⇥	Shift+Tab

App

Action	Mac	Windows, Linux
Save	⌘S	Ctrl+S
Command palette	⌘⇧P	Ctrl+Shift+P