默认的头部（header）包含文件名和文件创建日期和时间，以及一个页号和两行空白页脚。

The default header includes the filename and file creation date and time, along with a page number and two lines of blank footer.

youdao

除了按内容查询之外，还可以按元数据关键字，比如文件名、描述和创建日期来查找文件。

In addition to query by content, I can look for images by metadata keywords, such as filename, description, and creation date.

youdao

请记住，比较操作针对于文件名，而不是文件系统的创建或修改日期，所以该脚本可以对头天晚上创建的文件进行操作。

Remember that the comparison works on the filename, not the file system creation or modification date, and so the script is able to work with files that might have been created overnight.

youdao