Using your mouse you can explore the vrml worlds, zooming in on objects and navigating the streets and rooms. When a world first loads you will notice that some of the buildings and rooms lack texture or color. As the files for textures load in your browser these blank spots will be covered. You can move around as soon as the world loads without waiting for the texture files. I like to explore a world right away while I wait for the textures to fully load before I click on any objects. This makes it faster to return to the vrml world. These objects (furniture, buildings, household items, virtually anything) are hyper linked to various html files with text, video, photos and sound displays. If you click on an object before a world fully loads the files will not be cached. Once the files are cached they load much faster when you return from the html file.