[css-counter-styles] the term "negative-capable" is confusing

I find the term "negative-capable" defined in
http://dev.w3.org/csswg/css-counter-styles/#negative-capable to be
quite confusing when I see it outside of the context of its
definition (particularly in code).

In particular, negative-capable sounds like a construct that relates
to the range of a counter style, which this concept does not.

As an alternative, I'd suggest the term "uses a negative sign".

-David

-- 
𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                          https://www.mozilla.org/   𝄂
             Before I built a wall I'd ask to know
             What I was walling in or walling out,
             And to whom I was like to give offense.
               - Robert Frost, Mending Wall (1914)