Even after you download it, pick Pharo 7, and open it up, the "Explore Pharo" section points you to a page that doesn't work that says it's accurate for version Pharo 5. [0]

I finally found out that the magic invocation was to open up a window by clicking on the background, and navigating to Tools -> Playground, and running `Profstef go.` But they certainly didn't make it easy.

[0] https://ci.inria.fr/pharo-contribution/job/UpdatedPharoByExa...