Audience information is a store of knowledge about the target audience for the web as well as the actual audience who uses the web.
The purpose statement defines the reason for and scope of the web's existence.
The objectives list defines the specific goals the web should accomplish.
The domain information is a collection of knowledge and information about the subject domain the web covers.
The web specification is a detailed description of the constraints and elements that will go into the web.
The web presentation is the full description of the technical structures (hypertext and other media) by which the web is delivered to the users.