_CP_unix_break causes all subsequent
breaks to terminate the process as is standard in UNIX applications.
Syntax
int _CP_unix_break()
Description
This function returns -1 if
an error occurs. The error code is contained in _CP_errno.
Note: The break mode is set to _CP_pick_break() by default. Turning the BREAK key off with the _CP_break() call will disable breaks even when in _CP_unix_break() mode.