Dear all,
Perhaps CF would benefit from explicitly defining its use of the terms
"must", "should", etc. as the interpretation is currently ambiguous.
I would recommend CF adopts the definitions as used by the IETF RFC
process:
        
http://www.ietf.org/rfc/rfc2119.txt
Richard Hattersley  AVD  Iris Technical Lead
Met Office  FitzRoy Road  Exeter  Devon  EX1 3PB  United Kingdom
Tel: +44 (0)1392 885702  Fax: +44 (0)1392 885681
Email: richard.hattersley at metoffice.gov.uk  Website:
www.metoffice.gov.uk
 
> -----Original Message-----
> From: cf-metadata-bounces at cgd.ucar.edu 
> [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of 
> Jonathan Gregory
> Sent: 08 August 2011 09:40
> To: cf-metadata at cgd.ucar.edu
> Subject: Re: [CF-metadata] [FRANCE] Question about CF Convention
> 
> Dear John et al
> 
> > The actual CF convention says "should", im not sure why 
> > 
> **http://cf-pcmdi.llnl.gov/conformance/requirements-and-recommendation
> > s/1.5/
> > says "must".
> 
> My reading is that "should" and "must" mean the same and that 
> the convention, as it stands, requires CF-netCDF files to 
> have the .nc suffix. This statement has been there since the 
> dawn of time, but it could be proposed for deletion, or for 
> downgrading to a recommendation, at the next version of CF.
> 
> Cheers
> 
> Jonathan
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Received on Mon Aug 08 2011 - 05:27:47 BST