This is a poorly defined concept overall, but I think a fun one worthy of another look:
Hypertext fiction is characterized by networked nodes of text making up a fictional story. There are often several options in each node that directs where the reader can go next. Unlike traditional fiction, the reader is not constrained by reading the fiction from start to end, depending on the choices they make. In this sense, it is similar to an encyclopaedia, with the reader reading a node and then choosing a link to follow.