+val str_uref : MathQL.mquref -> string (* string linearization of a UriMan. reference *)
+
+val str_tref : MathQL.mqtref -> string (* string linearization of a tokenized reference *)
+
+val xp_str_uref : MathQL.mquref -> string (* string linearization of a UriMan. reference *)
+
+val xp_str_tref : MathQL.mqtref -> string (* string linearization of a tokenized reference *)
+
+val out_query : MathQL.mquery -> string (* HTML representation of a query *)
+
+val out_result : MathQL.mqresult -> string (* HTML representation of a query result *)
+
+val tref_uref : MathQL.mquref -> MathQL.mqtref (* "tref of uref" conversion *)
+
+val parse_text : in_channel -> MathQL.mquery (* textual parsing of a query *)
+
+*)