Today Dolphin Viewer 3 released version 18.104.22.16837. See the blog: Dolphin Viewer 3 – 22.214.171.12437
This is the second of two quick releases; one on the 26 and one today.
Two new features are in the releases; Area Search and Derender.
Area Search is in the top menu under World. See the image.
Derender is about hiding avatars and things. It is great for photos. One can right click an avatar and select Derender, which is at the bottom of the popup menu. For objects the feature is in the right-click popup menu under Manage.