So continuing on revisiting current schema, cs:info:
Originally the scheme made much more about the type/class of a style;
so much so that the class attribute had values like “author-date” and
"number" and validation was conditioned on those.
Simon and I agree to change that and to shift a lot of that to generic
I wonder if we should revisit this. One possibility is to have
cs:category only really cover fields, and encode the type somewhere