A symbol used in thesauri to indicate that what follows is a scope note to the heading term A scope note gives some indication of how the heading term is or is not to be used; it often refers to a related or overlapping term
a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide
Service Node Intelligent Network function that can contain specialized databases for call services and additional specialized switching (routing) of calls based on user-defined information An example of SN function is call routing to a selected number based on the caller's geographic location