This seems so straightforward, but I haven't found an answer. I want my players to be able to display an image from my Art Library as an overlay to the current page. Ideally, it would be a "Lightbox"-style blackout and zoom similar to the integrated token zoom, but all I really need is a button enabling my players to summon and dismiss an overlaid image at will. I don't want to have to open a new page (neither a Roll20 page nor a new browser tab). Does anyone have a technique for doing this? Thanks.