What "shake" behavior does? How can I use it? :S

What “shake” behavior does? How can I use it? :S

Shake is triggered when the game is running on iOS or Android, and someone shakes the device. This doesn’t work in a web browser, your game has to be exported.

you know, there’s a “what’s this” button for these things.

I checked I could not find one on the what’s this. It took me to the top of the page, but I did check 2 days ago, it may have changed

There is a what’s this button but …
Just look…
flowlab.io/support_behaviors#shake

yeah, the guide’s outdated, it probably should be updated

I still can’t find it. Maybe it’s my tablet