[Tagging] Feature Proposal - RFC - goods_conveyor

[Richard Z.]

On Wed, Feb 25, 2015 at 05:34:04PM -0800, Bryce Nesbitt wrote:
> Would "layer" work for this.  A layer of zero for something you can't pass
> at ground level.
> A layer of -1 for pipelines.  A layer of 1 for ski lifts and areoways.

No. 

Aerialways (most of them) and powerlines have an implicit location=overground.

Pipelines use location as well.

Layer is defined differently than location and does say nothing whether 
something is above or under ground. It should be used where features cross
or overlap.

Richard