Essentially, anything that naturally exists in a three-dimensional space is pretty easy to visualize.
Ideas are more difficult to visualize algorithmically.
Each object in the space is rendered as a small dot and the color of the dot depicts the state of one of the object's attributes. Treemaps provide similar results by rendering files and directories as bars. At the current time, the Docuverse allows the user to recursively display up to six levels of the document tree structure showing the size, type, age, number of links, or usage of each object. Figure 1 shows a 4-level directory hierarchy containing 3502 files in 164 directories showing the age of each files. Theoretically, using an arc size of one pixel, one could display 1,000,000 documents on a 1000x1000 pixel display.