Each country has its own national characteristics and traditions that have shaped a certain way of life and life for many centuries. Climatic conditions influenced the architecture and home improvement, which throughout the year should provide comfortable living conditions. All these factors combined were reflected in the windows and doors, which in different countries have significant differences from each other, both in arrangement and in the way they open and close - https://glawindows.com/tilt-turn-windows/
Let's look at these basic methods, as well as those countries in which they are widely used.
Basic types of opening
The most common sign by which windows can be classified is the direction of opening. They are opening:
Outward when the wings swing open to the street.
On two sides or, in other words, two-sided (combined) opening, for example, when the outer wings open onto the street, and the inner ones into the room.