module Helpers:sig..end
val blit_string_of_int_4_digits : String.t -> pos:int -> int -> unitval blit_string_of_int_2_digits : String.t -> pos:int -> int -> unitval blit_string_of_int_3_digits : String.t -> pos:int -> int -> unitval parse_two_digits : String.t -> int -> intval parse_four_digits : String.t -> int -> int