This illustrates the influence peripheral concepts have on the concept in the centre. The length of the lines may be used as a measure of the strength or importance of the influence.
Timelines allow for concise chronological organization.
Natural Object overviews consist of anchors superimposed on pictures, maps, technical diagrams, etc. Source text may act as its own overview in networks which are dominated by a central node or nodes. Landow's example is a poem with hypertext commentary.