[fitsbits] once FITS always FITS

[Peter Bunclark]

LC's NoSpam Newsreading account wrote:

> Yes.
> Perhaps we might also add some provisions by which duplication 
> of (all or a specific list of) reserved keywords is forbidden. For 
> mandatory keywords this is implicitly already specified by the 
> prescribed order (a double BITPIX, XTENSION or NAXIS1 or PCOUNT are 
> already illegal ... a double TFIELDS, TFORMn and alike should be !)
> 
> Lucio Chiappetti
> 


Peter Bunclark wrote (20 Aug):
 > Would it be too complex to make the non-duplication of reserved words
 > mandatory and of others just strongly recommended?

Looks like this discussion has hit that well-known threshold where 
people who need to keep up just can't manage the time to do so; 
certainly applies to me!

Pete.