When you use PDF Reader Pro, you can open multiple files in the same window, which makes it easy for you to manage files.
Start launching PDF Reader Pro, and do one of the following:
1. Click Open Files from Home. In the open dialogue window, select one or more filenames with the extension .pdf, and click Open;
2. Enter the reading page and tap Create a new tab
, select a file to open;
3. There is a window that pops up, choose Open a new tab in the same Window;
4. When you finish reading documents, click , or you can right-click the tab and choose Close tab, Close other tabs, or Close all tabs;
5. Or tap Settings 
on the menu bar -> File attribution -> Default Settings -> Open a document in -> choose Open a new tab in the same window.
