How do I see the keyboard shortcuts inside the whiteboard?

Press ? on the canvas, or open the menu and choose Keyboard shortcuts.

What are the whiteboard shortcuts on a Mac?

The same keys, with ⌘ Cmd in place of Ctrl and ⌥ Option in place of Alt — for example ⌘ + Z to undo and ⌘ + Shift + Z to redo.

Press Q or click the lock at the end of the toolbar. The tool then stays active until you pick another one.

Press Shift + 1. Shift + 2 zooms to the current selection, and Ctrl + 0 returns to 100%.

Press Ctrl + D, or hold Alt and drag the shape to pull a copy off it.

Action	Keys
Select	`V`or`1`
Hand (move the canvas)	`H`
Rectangle	`R`or`2`
Diamond	`D`or`3`
Ellipse	`O`or`4`
Sticky note	`N`
Arrow	`A`or`5`
Line	`L`or`6`
Pen	`P`or`7`
Highlighter	`M`
Laser pointer	`K`
Text	`T`or`8`
Insert image	`9`
Eraser	`E`or`0`
Keep the tool active after drawing	`Q`

Action	Keys
Zoom in	`Ctrl`+`+`
Zoom out	`Ctrl`+`−`
Zoom to 100%	`Ctrl`+`0`
Zoom to fit the whole board	`Shift`+`1`
Zoom to the selection	`Shift`+`2`
Pan the canvas	`Space`+`Drag`or`Scroll`
Zoom with the mouse or trackpad	`Ctrl`+`Scroll`or`Pinch`

Scroll pans the canvas; Shift + scroll pans sideways.
Ctrl + scroll, or a trackpad pinch, zooms around the pointer.
Middle mouse button, or Space + drag, moves the canvas with any tool selected.
Double-click empty canvas to type, a shape or arrow to label it, or a bend in a line to remove it.
Two fingers on a touchscreen drag and pinch; one finger uses the current tool.