Currently we support a fixed set of keys that can be used for filtering, but besides these, conditional variants of tags can have opening_hours values as well, but these' can't be saved as keys for filtering templates.
We could allow entering any key, or add specific support, the later will likely require wildcard/partial matching support to be really useful.
See https://github.com/MarcusWolschon/osmeditor4android/issues/1417
Currently we support a fixed set of keys that can be used for filtering, but besides these, conditional variants of tags can have opening_hours values as well, but these' can't be saved as keys for filtering templates.
We could allow entering any key, or add specific support, the later will likely require wildcard/partial matching support to be really useful.