Are people typically using the PREMIS Rights rightsExtension only for "right to preserve" information, or for other kinds of rights beyond what PREMIS Rights natively supports? Specifically, we are looking for ways to express constraints and requirements -- as opposed to affirmative rights-- based on contracts, statutes, etc. in a machine-friendly rather then person-friendly way. Examples include the need to store content covered by HIPAA or FERPA on a secured network; the duration, start/end, and basis for an embargo; a requirement to prevent downloading or to limit the quality of a dynamically generated deliverable. Whether or not you are putting rights beyond the right to preserve in PREMIS rightsExtension, what are you using to express them? I've been looking at METSRights, ODRL and whatever form XRML is taking these days, but would love to know what's considered most viable and forward-looking at this point, and most consistent with preservation goals. I realize this is drifting off-topic of PREMIS per se, so please email me privately. I can summarize for the list if there is interest. Thank you for any feedback on this! --Robin Robin Wendler Harvard University Library Office for Information Systems 90 Mt. Auburn St. Cambridge, MA 02138 USA 617-495-3724 (W) [log in to unmask]