module Buf:Character buffers. Similar to Buffer.sig..end
type 
val create : int -> bufcreate n creates the buffer.  n is used to determine
   the initial size of the buffer.  The meaning of n differs from
   modules to modules.val contents : buf ->
       CamomileLibrary.UnicodeString.Type.tval clear : buf -> unitval reset : buf -> unitval add_char : buf -> CamomileLibrary.UChar.t -> unitval add_string : buf ->
       CamomileLibrary.UnicodeString.Type.t -> unitval add_buffer : buf ->
       buf -> unit