The teacher delineated China on the blackboard with a coloured chalk.
It was a one-bedroom apartment, the kind where the living room is delineated from the kitchen area by a metal strip on the floor, joining the carpet and the linoleum.
In those early cold war days, the 800-mile border between East and West Germany was lightly guarded and delineated by a few strands of barbed wire, and thousands fled to the West.
