I don't know if it was planned this way (I don't see why it would be, but who knows), but it looks like I can only check the "template" box when uploading an image and not in editing afterward. I've uploaded a number of templates over time and I'd like to be able to check them as such (in addition to any others I find).
Who Is Luce? The Vatican's New Blue-Haired 'Anime' Mascot Explained