exception ParsingError of string

(* parses a string to a term *)
(* val parse: string -> Num.nf *)
(* parse many strings/terms, and returns the list of parsed terms + the list of free variables; variable 0 is not used *)
val parse_many: string list -> Num.nf list * string list
val parse': string list -> Num.nf list * string list
val parse_problem:
 string ->
  Num.i_var option * Num.i_n_var list * Num.i_n_var list