[Tagging] highway=residential_link

[Tom Pfeifer]

Colin Smale wrote on 2015-11-10 13:54:
> Duck test: short link between two primaries is primary_link, so a short link
 > between two residentials is residential_link. The fact that it is a very rare
 > scenario does not detract from the fact that it is existable.

 > Why resort to a different tagging
> pattern if it fits in the one we use for other analogous situations?

As said, to avoid key fragmentation, for this very rare species of ducks.
amenity=poultry + poultry=rare_duck
You can squeeze in more species hierarchy if you like.

Cartography involves an abstraction process, and that is supported by
categorising the tagging schemes.

tom