I prefer using the Firefox PDF viewer over the other browsers (Edge wants to spend a minute or more communicating with home base before even displaying the document) and particularly over Adobe's viewer for obvious current reasons. One lack in the Firefox viewer is bookmarks, or at least save in place. When closing a PDF using the others mentioned, the place is saved and opens up automatically there, which is tirelessly convenient when dealing with books and other large documents. Firefox always opens at the beginning of the document. I request that at the very least the saving of the last view be implemented if not user bookmarks. Also saving page zoom would be nice. I usually prefer page width preference, which is not saved currently either. Thanks for your time.