Hah, AI-written summary? (Using Buzzfeed's 1-sentence-per-paragraph-for-fifth-grade-reading-skills style). The author is "msexcel, Bronze Contributor", and if I click the username I get a "Cannot find current user" (1).

Anyway, adding an extra dimension on a 2-dimensional spreadsheet (rows, columns, and now depth)? Good luck with that.

(1) OK it breaks for all usernames, I guess because it's Microslop...