Complex sentence: DOI names may be used with other appropriate technology to provide added services, e.g., the OpenURL for context sensitive linking: the DOI directory is OpenURL-enabled so can recognize a user with access to an OpenURL link resolver.
Split into simpler sentences: DOI names may be used with other appropriate technology to provide added services, e.g., the OpenURL for context sensitive linking. The DOI directory is OpenURL-enabled so it can recognize a user with access to an OpenURL link resolver.