Let's see if I can clarify this. Suppose I write a doc file with
pictures in it. Years or months later I've forgotten the names of the
files. I want to go to the doc and find out the names of the files I
used. If I can find the names, then I can search my PC to find them.

In my case, the pictures were reduced in size when I placed them in the
doc. Hopefully, I can find the full sized files on my PC.