A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
So here is one more piece of information that I discovered following up on your reply. If you put your mouse over the information "i" in the options next to the Mini Toolbar selection, it says that it will appear when you select text.
So, this mini toolbar only appears when text inside the cell is selected and allows you to format the selected text.
Hopefully less confusing.
Reply if you have additional questions or information. Please mark this reply as answered if this solves your question.
Rich~M