This is one of the Okudagrams you can see in the panel behind Odo's desk. It can be clearly seen in the Season 3 episode "Improbable Cause", where Garak uses it to contact Enebrain Taim. The screen match is amazingly precise, especially when no two panels are alike. The added fun is that the same panel is in Odo's office throughout the whole series!The panel, a precise screen match -- always a treat when it happens :)