[Tagging] Clarification unclassified vs residential

[Andy Townsend]

On 23/02/2019 15:35, Greg Troxel wrote:
> ... But we don't have
>    primary_residential
>    primary_not_residential
>
> even though in the US that makes just as much sense as
> level5_residential and level5_not_residential.

OSM sort-of did have that a very long time ago.  The "abutters" key was 
used for something like that (see 
https://taginfo.openstreetmap.org/keys/abutters ) but even when I 
started (in 2008) I don't remember being told to use that key.

Best Regards,

Andy