With the increasing development of computer and Internet services and multimedia technology, more and more materials are published in e-Documentation format, such as functional PDF, Multimedia, e-Learning, and so on.

• 随着计算机和因特网以及多媒体技术的持续发展,越来越多的资料以电子文档的形式发布出来,例如功能性PDF文件、多媒体、在线教学等。