Currently, it is possible to open up tabss, including Friends, Groups, Inventory, Search, Map, Audio Streaming, Voice, and different IMs from individuals or groups. Once opened, however, there is no way to close these tabs if they are no longer needed. This can make navigating the screen using the keyboard somewhat difficult because there are so many tabs to go past. Often times, I will look at a notice from a group, but I will not interact more with that group, but if I receive IMs from others, I have to navigate past that tab. Being able to close it would make life simpler.