This paper explores navigation performance, amongst 12 postgraduate students, of linear and non-linear hypertext with one document. The three conditions presented to participants were:

• Linear: sequential structure, each node appears in a fixed linear sequence
• Hierarchical: one parent node for any number of child nodes
• Non-linear: cross-referential links, any card could be connected to a number of other cards

Links in cards are established through keywords or text buttons in each node