module Column:sig..end
type 'a t 
val create : ?align:Ascii_table.Align.t ->
       ?min_width:int ->
       ?max_width:int -> string -> ('a -> string) -> 'a tval create_attr : ?align:Ascii_table.Align.t ->
       ?min_width:int ->
       ?max_width:int ->
       string -> ('a -> Console.Ansi.attr list * string) -> 'a t