When I was studying in the library of Osaka Prefecture University, a staff put a sheet of paper on the oppsite side of the desk in front of which I was sitting.
Then, I looked into the paper. 3 cautions are written there.
"In the library
・Do not drink or eat.
・Do not speak loudly.
・Do not go away from your desk with your belongings on the desk"
Surely, the place she put it was full of textbooks, despite the owner was absent.
An hour later, the owner returned there. He found and read the paper. While I don't know whether he understood and accepted it, he began to study himself.
