[Tagging] wikipedia links and copy + paste in tag definitions

[Thilo Haug OSM]

> Do not falsely conflate "complex" with "worse". You original complaint
> was, in effect, that there was a lack of complexity, now you complain
> that there is.
In the OSM Wiki there's enough complexity
(and not everything is "orthogonal").

If you'd like to tag tourism POIs,
you should check several wiki pages :

https://wiki.openstreetmap.org/wiki/Key:tourism
https://wiki.openstreetmap.org/wiki/Key:amenity#Sustenance
https://wiki.openstreetmap.org/wiki/Key:sport#Core_values
https://wiki.openstreetmap.org/wiki/Key:leisure

All of those are interesting when on holidays
but there's no overview about that and the pages aren't linked.
Quite complex for a beginner
(what will an OSM navigation app user be interested in first ?)

Sometimes it's not clear why an item is in a certain category,
for example : why is this an "amenity" and not a "shop=vending_machine" ?
https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dvending_machine
(or an own key vending_machine=).

You will always have differences in definitions, especially in different
countries.
There's a nice example in the German Duden dictionary / Duden
Fremdwörterbuch (foreign word dictionary) :
"intellectual" is in one defined as someone with higher education,
in the other one as someone who questions things critically "in a mental
creative way".
Doesn't exclude each other, but quite different.

I agree that in some cases it might be difficult (just) to link to
wikipedia,
but I'm pretty sure that it helps to get some background information
about the "big picture"
in case you personally just know certain aspects of this item.

Cheers,
Thilo