Can I create folders or stacks for open documents in Pages?
I'm a professor, and I have a lot of papers to grade, which leads to a lot of open documents. I'm wondering if there's a way to create folders or stacks for open documents, so I can easily organize them while keeping them open. I know I can put things in folders and stacks when they're closed, but I'm hoping to find a way to be more organized while still having all the documents open, since I need to toggle fairly quickly between them. I'm using version 4.3, so it's probably time for me to update--any pointers, on any version, would be useful, and I'll update accordingly. Thanks!
MacBook Air (13-inch Mid 2013), OS X Mavericks (10.9.5)