An active link in a text (source), and a reference to another document (target). It is usually marked with a different color, or an underline, and may point to a whole document or to a specific element within a document.

A logical extension of the term Hypertext in which graphics, audio, video, plain text and Hyperlinks intertwine to create a generally non-linear medium of information.

A text displayed on a computer or other electronic device with references (Hyperlinks) to other text that the reader can immediately access, usually by a mouse click or key press sequence.

Picture source: www.hypertextopia.com/powertools/markov.