[Tagging] marking missing opening hours signs

[marc marc]

Le 18. 05. 18 à 20:46, Mateusz Konieczny a écrit :
> record that some objects miss opening hours sign.
> I started using opening_hours_sign=no

use/extend unsigned key and/or into a namespace
https://wiki.openstreetmap.org/wiki/Key:unsigned

for ex unsigned=opening_hours
or unsigned:opening_hours=yes (maybe strange due to "one only" value)

Regards,
Marc