[css-counter-styles] Ambiguity with prefixes

The paragraph on prefixes (
http://dev.w3.org/csswg/css-counter-styles/#counter-style-prefix) states:
"Prefixes are added to the representation after negative signs." Does this
mean "prepend the prefix after the negative sign has been applied", or "in
the position after the negative sign"? I.e., with

    prefix: '/';

Will -3 be represented as '/-3' or '-/3' ?

Technically, the paragraph on 'suffix' is similarly ambiguous, but both
readings will give the same result.


- Roland