*CHILD_ERROR
*OS_ERROR
*ERRNO
+ *EXTENDED_OS_ERROR
*EVAL_ERROR
*PROCESS_ID
*PID
*BASETIME
*WARNING
*EXECUTABLE_NAME
+ *OSNAME
);
# The ground of all being.
*CHILD_ERROR = *? ;
*OS_ERROR = *! ;
+ *EXTENDED_OS_ERROR = *^E ;
*ERRNO = *! ;
*EVAL_ERROR = *@ ;
*BASETIME = *^T ;
*WARNING = *^W ;
*EXECUTABLE_NAME = *^X ;
+ *OSNAME = *^O ;
# Deprecated.