Airbus A320 - How to open & close cockpit sliding window

The flight deck windschield arrangement is designet to ensure maximum visibility with a minimum glazed aerea, protection against bird impact and adequat ice, rain and mist protection. The side windows which can be slide open, provide emergency exits for the flight compartment. Flat chemically strengthened glass laminates have been chosed for the front windows. Stretched acrylic laminates are used for all side windows. The laminates are mounted in directly moulded seals which are clamped within the windshiel