1 - Should be able to recall some amount of past search terms (sometimes you want to go back to previous search and forget what you typed)
2 - Sometimes after tabbing through images you want to get back to one you saw earlier but you can't always get back to it via repeated tabbing. Remember which images have been seen already, allow, say, SHIFT-TAB to return to previous screens and TAB to proceed forward again, eventually fetching new images.
1 - Should be able to recall some amount of past search terms (sometimes you want to go back to previous search and forget what you typed)
2 - Sometimes after tabbing through images you want to get back to one you saw earlier but you can't always get back to it via repeated tabbing. Remember which images have been seen already, allow, say, SHIFT-TAB to return to previous screens and TAB to proceed forward again, eventually fetching new images.