In 1990 IBM donated a 9370 computer to our university. The default code page for German EBCDIC did not support square brackets. I don't remember whether trigra

In 1990 IBM donated a 9370 computer to our university. The default code page for German EBCDIC did not support square brackets. I don't remember whether trigraphs were not supported by the compiler at the time or whether we just wanted to avoid completely unreadable code. Not experienced in VM/370 administration we spent weeks to modify the system to use some international EBCDIC codepage. The system never saw much use, everybody preferred Unix workstations where programming in C was a natural thing.