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Done. And regards from another certified instructor, in our neck of the woods. :-)
Yes, this is exactly how I invoked the Wolfram|Alpha step-by-step solution.
Hello. At my college, Mathematica 14.0 is installed on a server. I asked our computer center why there are no *local* help pages, and instead it jumps to a web browser (none too successfully, by the way). They told me that with Mathematica 14.0...
One final note: apparently one needs to keep things "low-level" with `CellGroupData[]`, but also, for the groupings to work, it needs to be fed back into `NotebookWrite[]` and *not* `CellPrint[]`.
Kuba, thank you. ([Here][1] is the SE discussion.) [1]: https://mathematica.stackexchange.com/questions/167448/cellgroup-in-current-notebook