Thanks for the stab, but n, n, n, n, n. This has nada to do with elementary saving bookmarks.
Certain pages have active links that -poof- open a window that has some content you want to see, but the page designer has elected to show you
only that content in a window that isn't a full new page. A movie, an image, a form, for instance. The new window has no header, no bookmark bar, no google search field, no url field, no text size adjust, no save this page option, no elevators on right or bottom to navigate the content at all. It's just a "detail window" of sorts.
But someone came up with a way to cause Safari to open these windows in the normal fully-functioning window format as a complete page that includes the desired content. As if they were just another regular full new page with headers, elevators, scrolling, resizing, searching options, text scaling, etc. all intact.
That technique is the thing I've lost. How to open a mere "detail window" as a fully functioning page.