[Users] oVirt vs RHEV docs

Hi, Maybe I have missed this discussion before. It seems RHEV has a much richer collection of docs than oVIrt. I understand RHEV might be a little behind. As a guideline I wonder if we should always use RHEV docs if it's missing from oVirt. Are they always compatible?  Also in RHEV docs, how should we map the commands back to the oVirt world if they are different? Thanks. David