[topicmapmail] adding negation to a scope

[Asle Pedersen]

In order to state that a Topic is valid within the constraints of everything 
except a given scope, is there any preferred method of adding negation to a 
scope? In other terms this would mean creating a scope using the exception 
rather than the rule. e.g. St.Petersburg did_not_ have that name in the 
period 1914-1991. Is there perhaps a naming convention for scopes of this 
type or any other Topic attributes that could be used in order to tell an 
application that the scope should be interpreted with negation.

/Asle

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