| `CoercionsFull
| `TeX
| `Grammar
+ | `Hints
]
type mathViewer_entry =
| `About `CoercionsFull -> "about:coercions"
| `About `TeX -> "about:tex"
| `About `Grammar -> "about:grammar"
+ | `About `Hints -> "about:hints"
| `Check _ -> "check:"
| `Cic (_, _) -> "term:"
| `NCic (_, _, _, _) -> "nterm:"
| "about:blank" -> `About `Blank
| "about:proof" -> `About `Current_proof
| "about:us" -> `About `Us
+ | "about:hints" -> `About `Hints
| "about:coercions?tred=true" -> `About `Coercions
| "about:coercions" -> `About `CoercionsFull
| "about:tex" -> `About `TeX