Multi-tab Reading
The multi-tab browsing feature enables you to open multiple files in a single application window. Newly opened PDFs will be displayed in tabs by default.
In multi-tab reading mode, you can drag and drop a file tab outside of the existing window to create a new window and view the PDF file in that individual window. To recombine the file tab to the main interface, click on the file tab and then drag and drop it in reverse to the main interface.