You can right click on the folder/document icon in the title bar in any app, and you can left click it to drag it. The icon, not the window. What's bizarre is how Windows has trained people to see icons as non interactive stickers instead of reactive proxies for the underlying object. The fact that many labels in Windows still don't update until you close and reopen the dialog is ridiculous, as is the continued use of "ok" "cancel" preferences.