[Tagging] Feature Proposal - Covered

[Randy]

Tagging: covered=yes
Applies-to: node, way, area
Definition: denote that a node, way, or area is covered.

Summary: Layering can, in many cases be used to designate that an object 
at one layer is covered by an object at a higher level. However, there are 
many cases where, for example, a building which has a significant 
footprint at one layer may have a way passing under it which cannot 
appropriately be cast as at a lower layer.

In addition, it is proposed to use "covered" to indicate ground or water 
coverage when an object is buried or submerged.

Please provide comments at tagging@ or on the discussion page of 
http://wiki.openstreetmap.org/wiki/Proposed_features/covered.

Thanks,
-- 
Randy