Dear OOF users: A new version of OOF2, 2.1.11, is now available for download on the OOF website, http://www.ctcms.nist.gov/oof/oof2/ This version fixes a few bugs and provides support for the clang++ compiler on Macintosh OS X 10.9. As always, please let us know if you encounter difficulties downloading, installing, or running OOF2. Sincerely, The OOF developers Steve Langer Andrew Reid Gunay Dogan Yannick Congo