Important people and events often are captured in photos that are preserved long after the people themselves are gone, allowing later generations to experience history. Photography is a well-established medium for preserving family and cultural histories as well.
A sliding glass door. A sliding glass door or patio door, is a type of sliding door in architecture and construction, is a large glass window opening in a structure that provide door access from a room to the outdoors, fresh air, and copious natural light. A sliding glass door is usually considered a single unit consisting of two panel sections, one being fixed and one a being mobile to slide open. Another design, a wall sized glass pocket door has one or more panels movable and sliding into wall pockets, completely disappearing for a 'wide open' indoor-outdoor room experience.
Your sliding glass doors have roller adjustments on them. Depending on the manufacturer they can be on the sides of the frame or on the bottom rail of the door. Generally, you take a screwdriver to raise or lower the door for maximum slide ability/squareness/etc..