To close one by one tabs of the window (or current document not a window), press “Ctrl+ W”. To move a window when it is on restore mode, press “Alt + Space”, then hit the “ M” key, and then press one of the “Arrow Keys” on the keyboard. To resize a window when it is on restore mode, press “Alt + Space”, then hit the “ S” key, and then press one of the “Arrow Keys” on the keyboard. To minimize all windows that are behind the active window at once, press “Window + home” key. To maximize a window when it is on restore mode, press “Alt + Space”, then hit the “ X” key on the keyboard. To restore a window after pressing “Alt + Space”, hit the “ R” key on the keyboard. To minimize a window after pressing “Alt + Space”, hit the “ N” key on the keyboard. To change a restore window to full screen window, maximize window to full screen window, or full screen window to restore window, press “F11”. To maximize a restore window, press “Window + Up Arrow”. To move a restore window left or right, press “Window + Left or Right Arrow”. To restore, or minimize a window, press “Window + Down Arrow”. Press Alt + Space or right click on the top of (Title bar) the bar to show H idden Control Buttons of any window. Also you can also minimize all open windows at a time by pressing “Window + D”. To maximize all open windows at once, (without pressing a different key, immediately after pressing “Window + D”) press “Window + D”. To minimize all open windows at once, press “Window + M”. Click here to read about “Hidden Control Buttons” in Word Shortcut Keys to Minimize, Restore, Maximize, Close, etc.