SSAmples

[Jonathan McDowell]

Hi Markus,

 I'm going to try and hold out against this latest one:

> "... However, in order to avoid any confusion with the previous version of 
> VOTable which did not know the GROUP, all FIELDs are always defined outside any 
> group, and the GROUP designates its member fields via FIELDref elements."
> 
> It seems above rule prevents FIELDs in a GROUP (and hence also PARAM which in 
> the SSA context it is the special case of a constant column like an invariant 
> systematic error). Otherwise, I would support your approach.

I guess I don't really see the point. If it's constant, use a PARAM within
the group. If it's a column, use a FIELDref within the group. I don't think
this presents a particular parsing problem.

(Also, for what it's worth,
 most of the PARAMs are not in the category of things that might sometimes be FIELDs.)


  - Jonathan