| `Level of int * Gramext.g_assoc (* precedence, associativity *)
| `XmlAttrs of (string option * string * string) list
(* list of XML attributes: namespace, name, value *)
| `Level of int * Gramext.g_assoc (* precedence, associativity *)
| `XmlAttrs of (string option * string * string) list
(* list of XML attributes: namespace, name, value *)