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Re: Fwd: Items for fast track COMCIFS approval

I approve both changes.

Regards
Brian


On Mon, Mar 21, 2011 at 01:25:37PM +1100, James Hester wrote:
> Dear COMCIFS,
> 
> The following changes to the core dictionary have been approved without
> comment by the coreCIF dictionary maintenance group.  According to our
> procedures they are now ready for final COMCIFS discussion and approval.
> Following any discussion that may take place, COMCIFS voting members are
> asked to vote to either approve or reject these changes.  Failure to vote
> will be considered a vote to approve if a member has not voted within six
> weeks of today's date.
> 
> James.
> 
> -------- Original Message --------  Subject: Items for fast track
> approval  Date:
> Fri, 04 Feb 2011 10:30:03 -0500  From: David Brown  To: Distribution list of
> the IUCr COMCIFS Core Dictionary Maintenance Group
> <coredmg@iucr.org><coredmg@iucr.org>
> 
> Dear Colleagues,
> 
> 
> We have had two suggestions for fast track changes to the core CIF
> dictionary.
> 
> These are:
> 
> 1. A new enumeration value for _atom_sites_solution_:
> 
>               'iterative'
> 
> which may be defined as:
> 
> 'iterative algorithm, e.g. charge flipping (Oszlanyi and Suto, 2004. Acta
> Cryst. A60, 134-141)'
> 
> (Contributed by Arie van der Lee)
> 
> 
> 
> 2. A new enumeraton value for _atom_sites_solution_hydrogens,
> 
>               'mixed'
> 
> which may be defined as:
> 
> 'a mixture of "geom" and "difmap"'
> 
> This enumeration is currently widely, though illegaly, used.  As validating
> programs become increasingly strict in their interpretation of CIF rules,
> this enumeration will have to be added to ensure that the archive of CIFs
> can be properly read.
> 
> Contriburted by David Watkin
> 
> 
> -- 
> T +61 (02) 9717 9907
> F +61 (02) 9717 3145
> M +61 (04) 0249 4148

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