Indexing.Pp_helpers
val pp_comma : unit -> PPrint.document
val pp_symbol : symbol -> PPrint.document
val pp_static_symbol : static_symbol -> PPrint.document
val pp_axis_index : axis_index -> PPrint.document
val pp_indices : axis_index Base.Array.t -> PPrint.document
val print : PPrint.ToFormatter.channel -> PPrint.ToFormatter.document -> unit