Hi, I bought a module recently from the Marketplace that has a particular battle map with several areas hidden behind illusionary walls. In the default state of the map, the hidden areas are complete obscured. When I look at the THUMBNAIL of the page, the hidden areas are visible but on the page itself with the characters and icons, those areas are not visible. If the characters kill or banish the character creating the illusions then the walls should disappear revealing the hidden areas. I can't figure out how to reveal the hidden areas that I can see in the thumbnail. Advice much appreciated, I'm looking to DM this on Friday. Thanks!