Tables for
Volume G
Definition and exchange of crystallographic data
Edited by S. R. Hall and B. McMahon

International Tables for Crystallography (2006). Vol. G, ch. 2.2, p. 35

Section Dictionary compliance

S. R. Hall,a* N. Spadaccini,c I. D. Brown,d H. J. Bernstein,e J. D. Westbrookb and B. McMahonf Dictionary compliance

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(27) Dictionary files containing the definitions and attribute sets for the data items contained in a CIF should be identified within the CIF by some or all of the data items [Scheme scheme37] corresponding to DDL1 dictionaries or [Scheme scheme38] for DDL2 dictionaries. Where no such information is provided, it may be assumed that the file should conform against the core CIF dictionary.

(28) The _audit_conform data items may be looped in cases where more than one dictionary is used to define the items in a CIF and they may include dictionaries of local data items provided such dictionary files have been prepared in accordance with the rules of the appropriate DDL.

(29) A detailed protocol exists for locating, merging and overlaying multiple dictionary files (McMahon et al., 2000[link]) (see Section 3.1.9[link] ).


McMahon, B., Westbrook, J. D. & Bernstein, H. J. (2000). Report of the COMCIFS Working Group on Dictionary Maintenance. .

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