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

International Tables for Crystallography (2006). Vol. G. ch. 5.2, p. 493

Figure 5.2.3.1 

N. Spadaccini,a* S. R. Hallb and B. McMahonc

a School of Computer Science and Software Engineering, University of Western Australia, 35 Stirling Highway, Crawley, Perth, WA 6009, Australia,bSchool of Biomedical and Chemical Sciences, University of Western Australia, Crawley, Perth, WA 6009, Australia, and cInternational Union of Crystallography, 5 Abbey Square, Chester CH1 2HU, England
Correspondence e-mail:  nick@csse.uwa.edu.au

[Figure 5.2.3.1]
Figure 5.2.3.1

Examples of branching requests and the results returned by Star_Base from the example file of Fig. 5.2.2.1[link] . (a) A query designed to extract a data structure relevant to one contraction scheme and one atom type. (b) The results of that request. (c) A similar request, but with a branch followed when the condition cannot be matched against a requested data item in the current scope, and (d) the resulting output. See text for discussion.