This is why the door assemblies are referred to as "plugs" : The door is designed with special hinges & joints, such that opening the door involves first pullin

This is why the door assemblies are referred to as "plugs" : The door is designed with special hinges & joints, such that opening the door involves first pulling the door inwards, rotating it partially, and then finally swinging it outwards. If the door is not pulled inwards first, the shape of the door (as a "plug") prevents it from swinging out