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I know I posted here before, but I've been trying to simulate the light table in my export, and I fail every time. I'm a very inexperienced TVPaint user, so I'd love some guidance or newbie instructions. I need this light table effect as an aesthetic to my animation.

I swear I discovered a setting when exporting my animation (frame by frame, hand drawn) that, when played, showed the two previous frames. In my animation for uni, I want to utilise that deliberately and I can't seem to figure out how to do it again! Is it something related to lightbox? Sorry, I onl...