Before invokingA document must be open to use this option.
Menu pathView > Window > Document 9:
Command nameMDocWindow9
Accelerator key9 (from the main menu: Alt+V > W > 9)
Keyboard shortcutCtrl+Q, Ctrl+9
Options on parent menu (Window+)Duplicate Document View, Next Docked Window, Next Document, Previous Document, Document 1: , Document 2: , Document 3: , Document 4: , Document 5: , Document 6: , Document 7: , Document 8: , Document 9: