An address is a media item which identifies a location.
Addresses identify potential sources and destinations for acts of transportation. Addresses don't usually provide sufficient directions to determine complete paths.
Addresses are often directly related to physical tools and/or physical locations. However, addresses are not physical tools or locations. Addresses are media items.
Each persistent address must be uniquely identified within each persistent network.
Traditionally, persistent addresses are uniquely identified via hierarchically-ordered directories. However, modular IRIs can enable agents to consistently identify addresses in flexibly useful nonhierarchical forms.
In distributed networking, one address may represent more than one source or destination. (Note: This paragraph requires further elaboration and MOT linking.)