Yes, I am saving it in docx format. But the computer warned me about a possible incompatibility when I may have told it to ignore that problem.
I forget the exact words the computer warned me with. But it told me that since my document included formatting that other versions of Word don't support, I ight want to save the document in another format instead of the docx format.



The footnotes probably are true footnotes because I insert them with the option I find when I click the "References" tab.