Hi all,
I've noticed substantial use (99,297 instances) of the "detail" key, but
it is undocumented on the Wiki.
Nearly all uses (99.96%) of this key are detail=track [1], which is
associated with railways [2]. The key is predominantly used in France
(77.6% of uses [3]) but also elsewhere across central Europe.
I have concerns about this key (it's ambiguous and perhaps redundant if
all "correct" uses are for the same value) but, nevertheless, it would
be good to document its usage if possible. I haven't found anything in
the railway=*, railways, or OpenRailwayMap/Tagging documentation [4,5,6].
Does anybody know the background to this key, or what its intended
values might be?
Many thanks,
Nathan
[1] https://taginfo.openstreetmap.org/keys/detail#values
[2] https://taginfo.openstreetmap.org/keys/detail#combinations
[3] https://overpass-turbo.eu/s/1nzc
[4] https://wiki.openstreetmap.org/wiki/Key:railway
[5] https://wiki.openstreetmap.org/wiki/Railways
[6] https://wiki.openstreetmap.org/wiki/OpenRailwayMap/Tagging
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