You can search for identifiers within the package.
in-package search v0.2.0
val __ocaml_lex_tables : Stdlib.Lexing.lex_tables
val main : Stdlib.Lexing.lexbuf -> Bibtex__.Parser.token
val __ocaml_lex_main_rec : Stdlib.Lexing.lexbuf -> int -> Bibtex__.Parser.token