[Mapcss] (Pseudo-)Classes interrogations

[Chris Browet]

In Potlach.css, I see this:

/* Change the road colour based on dynamically set "highlighted" tag (see
> earlier) */
>
> way .highlighted { color: pink; }
>
> /* Interactive editors may choose different behaviour when a user
> mouses-over or selects
>    an object. Potlatch 2 supports these but the stand-alone Halcyon viewer
> does not */
>
> way :hover    { z-index: 2; width: eval('_width+10'); color: #ffff99; }
>

Firstly, I don't get the 'dynamically set "highlighted" tag (see earlier)'.
"highlighted" do not seem to be defined anywhere.Or is it meant to be
defined by a "{set .highlighted;}" on a ad-hoc basis?
Secondly, the 0.2 spec refers to a ":active" pseudo, while potlach.css uses
":selected". Which one is right. Both?
Thirdly, the 0.2 spec refers to a ":closed" pseudo, while potlach.css uses
":area". Which one is right. Both?
Fourthly, potlach.css seems to use a bunch of pseudo-classes not in the
spec. It would be nice to add them (and their meaning) to the spec as they
are added to potlach.

- Chris -
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