Dear OOF users: We will be holding an OOF workshop at NIST in the late spring or early summer. The workshop has several goals, one of which is planning the future development of OOF. We hope to get input from you, the users, about how OOF fits into your research and development strategies, and what kind of enhancements you would like to see. In addition, we will have presentations from users (ie you) on current uses of OOF. The workshop is tentatively scheduled for May 16-17, or June 11-12, or June 21-22. If you have a preference please let us know as soon as possible. It will be one and a half or two days long, depending on the number of people interested in attending. Please send mail to oof_manager@ctcms.nist.gov, letting us know of your interest and availability. Please also pass this on to any colleagues or managers who also might be interested in attending. If financial constraints are a significant impediment to your attendance, let us know, as limited travel support is available. Sincerely, Steve Langer (stephen.langer@nist.gov) Ed Fuller (edwin.fuller@nist.gov) Craig Carter (ccarter@mit.edu)