I’m unsure

Back Button For Image Dual?

So would it be possible to but some kind of back button or another tool that would enable you to go back to the last 2 pics in image duel? For example: I chose my favorite of the 2 images being displayed, but as soon as I click on the image, I notice, albeit to late, that it has a watermark, or something else I missed that would make me wanna pick the other image. Not a big deal just thought this would be a way to pick the right image without spending too much time thoroughly examining each image. Just a suggestion, hope if its not to big of a problem you guys could make this an available option, so us mistake making humans can correct our accidental picks :)
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