subroutine exit (status) integer*4 status
exit flushes and closes all the files of the process, and notifies the parent process if it is executing a wait. The low-order 8 bits of status are available to the parent process. These 8 bits are shifted left 8 bits, and all other bits are zero. Therefore, status should be in the range of 256 - 65280.
This call never returns.
The C function exit may cause cleanup actions before the final `sys exit'.
If you call exit without an argument, you get a warning message, and a zero is automatically provided as an argument.
libfui.a