Use of find & replace control on base form

With a base form there is a find & replace control above the form. With a simple table and simple form I don’t see what this control does. It doesn’t seem to find anything in my simple table. How is that control supposed to be used? And yes, I have read the entry for question “why won’t FIND work in Base forms”. And I do know about using form filters. I am using Version of Libre Office, on a Mac.