[Tagging] capital and state_capital: how are they being used in your country?

Following from the previous discussion
(https://lists.openstreetmap.org/pipermail/tagging/2014-May/017515.html),
it seems clear we would all like to know how these tags are being
employed in each other's country. So if you know how it's being done
in yours, or if you can try figuring it out, please take a minute to
describe it here briefly. We will write a wiki article about it.

I'll start with mine, Brazil:
- Brasília [1] [2], which is the political capital but not the largest
city, has capital=yes
- São Paulo [3] [4], which is the capital of the São Paulo state, has
state_capital=yes
- Campinas [5] [6], which is a regular city (though a very large and
important), has neither of those tags

None of them have admin_level=* tags.

Brasília's relation is actually missing a capital=yes tag, but I'll
wait to hear you before adding it (or removing it from others'
relations).

[1] https://www.openstreetmap.org/node/34567423
[2] https://www.openstreetmap.org/relation/2758138
[3] https://www.openstreetmap.org/node/30674098
[4] https://www.openstreetmap.org/relation/298285
[5] https://www.openstreetmap.org/node/32070447
[6] https://www.openstreetmap.org/relation/298227

-- 
Fernando Trebien
+55 (51) 9962-5409

"Nullius in verba."