[Tagging] advices about multiple values have inaccuracies , between several pages

[Marc_marc]

Le 11.10.22 à 14:31, Mateusz Konieczny via Tagging a écrit :
> though https://taginfo.openstreetmap.org/keys/crossing%3Aisland 
> is still a property

To caricature your example:
red=yes/no is a technically property
this is not a good idea though,
the hidden characteristic is color and the value is red

>     1) never use multiple values in a main key, no tool manages it and
>     it is not a good idea to describe an object with multiple "features
> 
> there are some tools supporting this

witch one for ex ?

>     2) Properties can have a large number of possible values
>     key with only =yes/no value aren't a propertie, it's the value
>     for another key
> 
> both are properties, ATYL page is just confusing and should be fixed
> 
> I added "or can have short list of valid values" there

I find it very strange to reverse the meaning of a sentence on the wiki 
to promote your vision when I have just opened the discussion
it's unfair

Regards,
Marc