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Re: [ddlm-group] Latest summary of proposed CIF syntax changes

While there may be refinements, corrections and additions to this 
document, I believe it fairly represents the major decisions made over the 
past year, and suggest we approve it as is, ask the community for comments 
over a limited period of time, and move forward with implementation 
promptly.

   -=- Herbert

=====================================================
  Herbert J. Bernstein, Professor of Computer Science
    Dowling College, Kramer Science Center, KSC 121
         Idle Hour Blvd, Oakdale, NY, 11769

                  +1-631-244-3035
                  yaya@dowling.edu
=====================================================

On Mon, 1 Mar 2010, Brian McMahon wrote:

> With apologies to Nick for the delay, I have now posted the latest
> draft of the revised CIF specification change document (dated 18 February
> 2010) at
> http://www.iucr.org/__data/assets/pdf_file/0005/40775/syntaxchangesproposed20100218.pdf
>
> Nick has drawn my attention to the approach taken in this draft that
> many of the restrictions required to CIF2 data files and names that
> have been previously discussed on this list are a requirement of the
> DDLm application of CIF2.
>
> Hence this document is liberal with respect to what you can have. It
> allows for a family of CIF2 applications that imposes minimal name
> restrictions, *but such applications cannot be handled in a DDLm, dREL
> framework*.
>
> The implication is that if, for example, IUCr journals or other
> stakeholders wished to take full advantage of DDLm/dREL (which, after
> all, is the primary motivation for this line of development), they
> would impose the additional necessary naming restrictions to ensure
> that only DDLm/dREL-compliant CIFs were handled in their normal
> workflow.
>
> Regards
> Brian
> _________________________________________________________________________
> Brian McMahon                                       tel: +44 1244 342878
> Research and Development Officer                    fax: +44 1244 314888
> International Union of Crystallography            e-mail:  bm@iucr.org
> 5 Abbey Square, Chester CH1 2HU, England
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