Visually, each browser page presents three levels of the knowledge tree as a sequence of paragraphs.

The lowest level displayed on the page is a single branch (sentence), which appears as the page title. The first sentence of each paragraph is a branch at the next level of detail; those branches comprise the entire explanation of the title branch. The other sentences of each paragraph are branches at the highest level of detail. For each paragraph, the other sentences explain the first sentence. Clicking the first sentence of a paragraph thus climbs up one level to display the page for that paragraph. Clicking any other sentence thus climbs up two levels to display the page for that sentence.