Cues should be provided to help the user retain a sense of location within the information structure.
Additional Information:
Hypertext-based information structures are often characterized by links that are based on conceptual relationships between the information content (relational links) rather than on structural relationships (e.g., relationships that result from a regular hierarchical structure). In such documents, the user can rely on the familiar structure of the document for orientation, instead of having an understanding of the link structure. For example, having arrived at a location from a conceptually related location elsewhere in a document, a user can relate the current location to the overall structure of the document by noting which volume, section, and subsection is currently accessed, even thought that hierarchy was not actually traversed.