You can search for identifiers within the package.
in-package search v0.2.0
expr
Expr.Lexer
exception Failure of string
val fail : ('a, unit, string, 'b) format4 -> 'a
val atof : string -> float
val hms : float -> float -> float -> float
val get : Lexing.lexbuf -> string
val getchar : Lexing.lexbuf -> int -> char
val __ocaml_lex_tables : Lexing.lex_tables
val token : Lexing.lexbuf -> Parser.token
val __ocaml_lex_token_rec : Lexing.lexbuf -> int -> Parser.token
val string : Lexing.lexbuf -> Buffer.t -> Parser.token
val __ocaml_lex_string_rec : Lexing.lexbuf -> int -> Buffer.t -> Parser.token