The results from an experiment analysing hypertextual semantic linking is reported. In the study participants are asked to describe logical relationships between related, semi-related and unrelated paragraphs of text. It is concluded that existence and 'themes' of relationships are (as expected) fairly consistently recognised, however, specific relationships do not readily fall into 'natural' predicate like statements. Purely 'thematic' relationships, or a 'palette' of available relationships might be the more practical approach. Further work on dynamic linking in hypertext documents is also reported. Dynamic linking eliminates some of the problems associated with a mismatch between the mental models of authors and readers and allows the readers to construct their own hypertexts from linear documents. This approach offers useful data on logical connectivity in hypertext documents but also represents an alternative to conventional hypertext authoring and reading. © 1992 Kluwer Academic Publishers.