Format of audit logs

Can anybody point me to a document which describes the format of logs generated by auditd in RHEL 4. This is for a customer, and is for human consumption. I don't need to parse them. I know they're reasonably self-explanatory, but it would be a significant amount of work to document it myself. Thanks, Matt -- Matthew Booth, RHCA, RHCSS Red Hat, Global Professional Services M: +44 (0)7977 267231 GPG ID: D33C3490 GPG FPR: 3733 612D 2D05 5458 8A8A 1600 3441 EA19 D33C 3490