Andy
you wrote
> the problem here is
> that we are looking at a fairly broad range of characteristics -
> perceptionMode, controlMode, structuralFeatures, functionalFeatures
> (or
> somesuch).
>
> It is much better to separate out these characteristics using several
> properties - not least because doing so will make the semantics of
> each
> much clearer. Otherwise we get into what I tend to think of as the
> "DC
> Format problem". Very different kinds of values lumped together in
> the
> same property. This makes machine processing very difficult or
> impossible.
>
I think these characteristics are independent of each other but all
related to adaptability. There could be groups of them, for sure, eg
control, display and presentation as we want for disability/
accessibility, ...
I think we'd prefer them to come from a controlled vocab and am sure
the implementers want that ... (so the ISO version includes such a
vocab).
I am not sure what you are suggesting by your comment?
Liddy
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