1. A storage medium encoded with instructions, wherein the instructions when executed comprise: determining a tree representing a plurality of links, wherein the plurality of links are embedded in a plurality of documents, wherein each of the plurality of links points to a respective one of the plurality of documents, and wherein the determining further comprises probing the plurality of links, starting with a root link of the plurality of links; creating a depth indicator, wherein a size of the depth indicator is proportional to a size of the tree, wherein the size of the tree comprises a total number of the plurality of links in the tree, wherein the creating the depth indicator further comprises creating representations of the plurality of links in the depth indicator; and displaying the depth indicator associated with the root link in a root document of the plurality of documents.