1 Introduction The proliferation of digital materials has changed not only how information is presented but also how people expect information to be available. People want access to all forms of information,from simpl...1 Introduction The proliferation of digital materials has changed not only how information is presented but also how people expect information to be available. People want access to all forms of information,from simple text to complex multimedia.Whether or展开更多
文摘1 Introduction The proliferation of digital materials has changed not only how information is presented but also how people expect information to be available. People want access to all forms of information,from simple text to complex multimedia.Whether or
