Joined: 20 Oct 2006 Posts: 6966 Location: porcelain throne
I agree with Bill.
The status codes for service calls should be used, always.
With the increasing complexity of computer systems
the ever increasing error/warning return codes (status-code for I/O)
your code should interrogate these codes specifically (e.g. EVALUATE)
outside the I/O-END-I/O statement.
not rely on the 'old-style' clauses provided in the I/O syntax.