@webline: I’ve had to wrestle with this problem considerably in my projects, mostly due to custom imports from an external system that result in notes being assigned names that include virgules (a.k.a., slashes) and semicolons. The Toolbox that I offered in a prior posting provides one solution to this problem. (See the “(Other Functions)” and “Safe Paths:” stamps in the Toolbox.)
I also agree that the most practical way to deal with the semantic confusion for common (ASCII) character usage is to utilize IDs ($ID or $IDString) as the way to reference notes unambiguously.