书签的演变

摘要

Bookmarks experienced a long evolution.Bookmarks in ancient times are various in forms and rich in content.In the Internet era,owing to the emergence of electronic books,bookmarks have been changed from the tangible objects to the intangible computer program code,thereby increasing the evolution of bookmarks.%书签经历了从无到有的漫长演变。历史上的书签形式多样,内容丰富。进入网络时代,电子图书的出现,书签从实物变成了摸不着的电脑程序编码,从而加剧了书签的演变。