Can anyone suggest a good reference or two that describes the error handling and recovery mechanisms built into MPE/iX or MPE/XL. I'd prefer something that has been published where I might find it rather than an HP manual if possible, they are a bit harder to find than published papers in the local uni library. Thanks alot, -- brian wallis... TUSC Computer Systems Pty.Ltd <[log in to unmask]> 666 Doncaster Road Phone: +61 3 9840 2222 Doncaster, Victoria Fax: +61 3 9840 2277 Australia 3108