URL link widgets

[Ben Bacarisse]

Is there are key binding I can use (or set up) to copy the URL in a
link?

I think (but I am not certain) that Gnus and others use a widget to
display an <a>...</a> element in an HTML mail, but whatever it is they
use, I'd like to be able to something other that click on it (or RET
which does the same thing).

If it's Gnus-specific, I'll ask elsewhere, but I think it's more general
than that.

-- 
Ben.