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Re: comments on coreCIF.dic 2.1

> 22. _refine_ls_abs_structure_Rogers
> the allowable values for this item should be indicated as they are in=20
> _refine_ls_abs_structure_Flack

  -1 =< eta =< 1

> More important and perhaps a matter for further discussions. There is no
> way to make a CIF for a twinned crystal. Some definitions for twin
> matrices for example should be added.

  Excellent idea.  Needs both the rotation/rotoinversion twin matrix in
some form and the volume fractions with su's.


Howard Flack        http://www.unige.ch/crystal/ahdf/Howard.Flack.html
Laboratoire de Cristallographie               Phone: 41 (22) 702 62 49
24 quai Ernest-Ansermet             mailto:Howard.Flack@cryst.unige.ch
CH-1211 Geneva 4, Switzerland                   Fax: 41 (22) 702 61 08

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