How do I re-activate the primary/default environment? (Pkg3)

If I want to update my Julia module’s Manifest I can navigate to its root directory, press ] to go into package mode, then activate . to activate its directory, and finally I can add the package.

Let’s say I don’t have any other specific working environments set up as I’m a relatively ‘low-tech’ user. How can I get back to the default environment that is loaded when I first started the Julia REPL?

Try activate (without arguments).