My parents would certainly never have used the word enclosure, nor thought that the practice they were inculcating in their children was a monastic practice, but growing up I lived in a house that lived, to a certain extent, by a limited rule of enclosure.
One of the ways we practiced this was that our bedrooms were off limit to our friends. Bedrooms were not regarded as play areas, and while we could play there quietly on our own, we could not invite our friends into them. We entertained our friends in the living room or the basement, but not in our bedrooms. I was always a little uncomfortable when visiting a friend’s house to be invited into their bedrooms. I had the feeling that I shouldn’t be there.