HyperTalk (Hypertext in Smalltalk) is a framework for "an-authoring-in-the-small" [HDM paper] to create the runtime layer portion of a hypertext application in the Dexter Modeldexter paper]. It is used to build the GUI for a hypertext application to retrieve a HyperLink at runtime, process the desired action for that HyperLink depending on the context, and then render the nodes for display.