| `HBugs of [ `Tutors ] (* list of available HBugs tutors *)
| `Metadata of [ `Deps of [`Fwd | `Back] * UriManager.uri ]
| `Uri of UriManager.uri (* cic object uri *)
+ | `NRef of NReference.reference (* cic object uri *)
| `Whelp of string * UriManager.uri list (* query and results *)
| `Univs of UriManager.uri
]
String.sub suri 4 (len - 4) in (* strip "cic:" prefix *)
(match dir with | `Fwd -> "forward" | `Back -> "backward") ^ suri)
| `Uri uri -> UriManager.string_of_uri uri
+ | `NRef nref -> NReference.string_of_reference nref
| `Whelp (query, _) -> query
| `Univs uri -> "univs:" ^ UriManager.string_of_uri uri