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Re: Backus-Naur descriptions for STAR and CIF

• Subject: Re: Backus-Naur descriptions for STAR and CIF
• From: David Watkin <david.watkin@xxxxxxxxxxxxxxxxxxxxxx>
• Date: Thu, 18 May 2000 08:50:09 +0100 (BST)

Is this my 'resync' appearing in a more formal way?

		Best wishes
					David

On Wed, 17 May 2000, Richard G. Ball wrote:

> On May 17,  4:56pm, Brian McMahon wrote:
> 
> > > > What about designating the end of looped data with "stop_"?
> > >
> > > It is provided for within the BNF but not mandatory. Therefore its
> > > presence or otherwise still makes for a consistent CIF.
> >
> > Hmm - vcif certainly chokes on "stop_" in a CIF. Nick, can you discuss this
> > with Syd Hall? I suspect that many existing CIF applications, written by
> > crystallographers who have only read the Acta paper, would break if they
> hit
> > a stop_.
> 
> A specific loop ending designator would simplify a lot of the record-based
> CIF readers. If there was a supported "prettifier" which would insert such
> elements then those who'd want to write a CIF-reader could rely on this more
> structured format to make their programs simpler.
> 
> Richard
> 
> --
> Dr R.G. Ball                    |  voice: 732-594-5341
> Merck Research Laboratories     |  fax: 732-594-6793 or 6100
> PO Box 2000, R50-105            |  email: Richard_Ball@merck.com
> Rahway, NJ  07065   USA
> 
> 

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