To display a list of pages which are downloaded from a worldwide web by making a page object generation circuit generate the page objects for each of documents contained in a list of link documents.

A list of web pages is generated and then the page objects are generated in every web page. Every page object shows the inside of a web page for use of a book metaphor. Then a web book is generated from the page objects and this web book has its basic structure to list up pages and to perform various types of control. When a user opens the web book, the web book is plotted by the corresponding system and shown on a display 107. When the web book is first opened, the cover of the first page of the book is shown. Then the book is opened at a part where the book is closed last when the book is opened again. Then the user turns over the pages to perform the viewing of the web book, e.g. the marking.