PBE- Updated Section 2.8

This section asks you to open both a Playground and a Transcripts window but wants the Playground window just overlapping the Transcript window. I do that with a Transcript show: 3 + 4 entry in the Playground and, sure enough, a 7 appears in the Transcript window.

But... what was the point of asking you to overlap the windows? What have I missed?

As an aside, the answers and helpful hints I have received from my questions have been really "helpful". What a concept.

Dan