sig
val blito : (src, Core_kernel.Std.Bigstring.t) Iobuf_intf.consuming_blito
val blit : (src, Core_kernel.Std.Bigstring.t) Iobuf_intf.consuming_blit
val unsafe_blit :
(src, Core_kernel.Std.Bigstring.t) Iobuf_intf.consuming_blit
val subo : ?len:int -> src -> Core_kernel.Std.Bigstring.t
val sub : src -> len:int -> Core_kernel.Std.Bigstring.t
end