项目关键字 meaning in Chinese

project key

You can type or paste text , add project information ( such as project subject , author name , and project keywords ) and document information ( such as page number , date , time , and file ) , and paste or insert graphic images into headers , footers , and legends
页眉、页脚和图例中均能键入或粘贴文本、添加项目信息（如项目主题、作者姓名和项目关键字）和文档信息（如页码、日期、时间和文件）、粘贴或插入图像。