Earlier quoted context omitted.
> Some times I reopen a window of preview let's say just to close the whole program. I do not understand what you are saying. Can you elaborate?
Here is a scenario, and my mac is a month old, so maybe I am borrowing heavily from Ubuntu and MS experiences. When I am reading two pdfs, and then close one, it makes sense for the preview menu to stay on because I am reading the second pdf, but when I close the second, what reason is there for preview menu to stay up? Edit: As to my original comment, when I switch to another app, preview stays open, but up to now I…
As far as the menu disappearing when you close both documents, that's confusing and directly contradicts what you typed earlier. I can open Preview.app, and it'll just show me the menu. I can close it by alt-tabbing to it and hitting Cmd-Q - no windows required.