[Tagging] permissive etc. (was Amenity swimming_pool (was Amenity parking))

[John Sturdy]

Another variation that I've heard of is a farm internal road that the
farmer allows cyclists to use provided they sign a disclaimer that
they won't sue him for any accidents they have along the road (or
something like that, maybe using the road is taken to indicate
agreement with the conditions).  But I've only heard of one such
route, and I suspect such things are rare enough not to warrant
devising a special tag value for them.

__John