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Re: Backus-Naur Form for CIF

Dear Colleagues,
  May I request some time to carefully review Nick's BNF.  This is a very
important document which will be used by many software developers.  I
would like to suggest that we follow an orderly process:

  1.  The document with its recent corrections should be posted to an IUCr
page for comments and suggestions by not only the COMCIFS membership, but
by appropriate interested technical consultants, for at least 30 days.

  2.  If significant changes are made, the clock should be restarted until
a stable version has been posted for at least 30 days.

  3.  Then we should vote.

I for one will not be able to make the necessary rigourous tests (i.e.
using this BNF with real programs) until I am back from England in


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On Thu, 21 Sep 2000, Brian McMahon wrote:

> Dear Colleagues
> Nick Spadaccini has posted a BNF description of CIF Syntax and Grammar at
>      http://www.cs.uwa.edu.au/star/cif-bnf.html
> I would like COMCIFS to give formal approval to this version of the BNF, so
> that it may be included as part of the "official" specification that we may
> refer users to in the new Policy document.
> This document has been carefully reviewed by the cif-developers community
> and by me, so that COMCIFS members need not carry out their own technical
> review unless they so wish. However, I would welcome the formal assent of
> COMCIFS voting members to the adoption of this specification. As with voting
> for dictionaries, please register your vote for or against (with reasons
> in the latter case) within the next two weeks, or request an extension to
> give more time to consider the matter.
> Regards
> Brian

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