Select Window dialog box
[Window > More Windows...]
You can view the list of all open documents at the bottom of the [Window] menu. To open the document, double-click the document title in the Select Window dialog box or select the document and click OK.
You can view the list of all open documents at the bottom of the [Window] menu. When more than 10 documents are opened, the [Window > More Windows...] menu command appears. The name of the menu may differ depending on the computer’s operating systems.