Beechside

Got it!  The answer is that you use the § key, just above the Tab key.

All working well and I have a very, very happy boy who can now build a schooner...

My young son is crazy about the game.  Thanks to the Devs...

Meanwhile, he is interested in using Admin commands but can't seen to find a way of getting up the Command bar.  Web sources say it's the Tab key but that's bound to "Hide Map Text".  He's playing on a Mac using Bootcamp under Windows 10.  He's also in Single player mode.

'Fraid I know nothing about Atlas (though pretty savvy elsewhere).  Is Admin a Server only function or can he use Teleport and fly etc in Single player?  He just wants ot get on with building boats.

Input much appreciated...