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Download selected files How to use: 1. Sign in to [网络学堂](http://learn.tsinghua.edu.cn/) and open the "Course Files" page for a course. 2. A row of checkboxes and a "Download" button will appear on the page. 3. Select the files you want to download and click "Download". 4. Wait patiently for a ZIP archive named after the course to appear.