Rear Exit window in GS 8368 A Class Motorhome

[Tiara]

Hi all
Does any one know if you can test the rear emergency exit window on a 2004, A Class GS Sun Voyager 8368.
Would just like to know if the rear emergency exit window can be closed again after being opened, don't want to risk not being able to close the exit window after opening it. Would just like to test the window in case we ever have to use it to escape a fire.
Thanks in advance for any feedback.
Mike