The CIFtbx release has been updated to: CIFtbx2 Version 2.5.1, September 1996 CYCLOPS Version 2.1.1, September 1996 cif2cif Version 0.0.4, September 1996 In addition to having all the features discussed at the CIF workshop at the IUCr meeting in Seattle, such as bookmarks and comment handling, these versions have had some portabibility problems corrected. In order to reduce the number of warning messages encountered on some systems, the common blocks have been reorganized, and some new items appear on the MANIFEST. Please review the README and MANIFEST carefully. In particular, please be certain you have the new files ciftbx.cmv, ciftbx.cmf and clearfp.f before compiling. Users of FreeBSD please note: The problem with numeric output by pnumb_ and pnumd_ under FreeBSD in version 2.5.0 has been corrected with release 2.5.1. During the preparation of this release, there was a brief period when some files from earlier releases may have appeared in the release directory along with the new files. The correct versions of ciftbx.shar and ciftbx.cshar are of sizes 729K and 718K respectively and are dated 29-Sep-96. Herbert J. Bernstein (yaya@bernstein-plus-sons.com)