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Draft DDL 2.1 CIF binary file extension dictionary
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- Subject: Draft DDL 2.1 CIF binary file extension dictionary
- From: John Westbrook <jwest@ndbdev.Rutgers.EDU>
- Date: Fri, 24 Jan 1997 16:50:32 -0500 (EST)
Greetings ... Well over 6 months ago I volunteered to translate Andy Hammersley's draft for a CIF binary file extension into DDL 2.1. A very preliminary version of the dictionary is now available in text and HTML formats at: http://ndbserver.rutgers.edu/NDB/mmcif/dictionary/ This extension dictionary has been developed so that it can be used as a supplement to the mmCIF dictionary which you will find at the same address. In addition to incorporating Andy's extensions, this dictionary provides a general definition of one or more array data sections. The dictionary does not specify the details of how the array data would be managed relative to other mmCIF data items. I favor the idea of handling the array data along with and in the same manner as other mmCIF data (i.e. data types declared in the form of regular expressions); however, they could just as well be segregated in separate data blocks or delimited by special comments. Many thanks to Andy for his advice, and for reviewing the draft dictionary. Regards, John -- ****************************************************************** * John Westbrook Ph: (908) 445-4290 * * Department of Chemistry Fax: (908) 445-4320 * * Rutgers University * * PO Box 939 e-mail: jwest@ndb.rutgers.edu * * Piscataway, NJ 08855-0939 * ******************************************************************
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