They are called tilt and turns in the UK. I first fitted one in about 1995, in a conservatory. I’ve fitted hundreds since then.

Very, very versatile window but they also mean you can’t easily fit window blinds in the window reveal itself because the window will hit it if you want to open it all the way. Though it’s ok on the tilt setting.
Curtains are fine, but if you want blinds then you have to fit them to the walls.