type port = | In of int| Out of int| Clk
type call_graph = link listtype clock = string * Data.vval top : string * stringval pack : 'a list -> int -> 'a list listval int_list_to_str : int list -> string listval val_to_string : Data.v -> stringval get_link_val : link -> Data.vval get_val : Event.var -> Data.subst list -> Data.vval link2str : (('a * string) * 'b * string) -> stringval pdf_viewer : string refval get_url : string -> stringval last_arrow_first : bool refval update_tagcov : Event.t -> unitval dump_call_tbl : unit -> unit