DITA reuse concepts depends on keydef and keyref. Currently Tridion docs doesn't resolve keyref (Key reference) in Collective spaces, web repository, client tools (XML editor, Publication Manager).
In Tridion Docs 14 SP2, even keydef and keyref are not visible even.
The dynamic resolving mechanism should be happening in client tools, publication manager and collective spaces as well. Because we have the map context where the keydefs are present.