> Are there other applications that care whether something really does
> not have a name or whether the name is just not know?

Yes, I see one. Someone might argue I am not of good faith, but anyway there 
it is :

Suppose I'm working for a local urban institution and they ask me to replace 
any missing sign on streets and roads (because they were stolen/destroyed)

Using the information that a osm mapper wanted to "shut the validator warning" 
does not clearly indicate that the sign is missing.

info=no sign here 
becomes then an information about reallity of things : 
"there are no sign on that street"


-- 
Sylvain Letuffe [EMAIL PROTECTED]
qui suis-je : http://slyserv.dyndns.org



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