Headings (odoc.Odoc_document.Doctree.Headings)

val fold : 
  enter_subpages:bool ->
  ('a -> Odoc_document.Types.Heading.t -> 'a) ->
  'a ->
  Odoc_document.Types.Page.t ->
  'a

val foldmap : 
  enter_subpages:bool ->
  ('a -> Odoc_document.Types.Heading.t -> 'a * Odoc_document.Types.Heading.t) ->
  'a ->
  Odoc_document.Types.Page.t ->
  'a * Odoc_document.Types.Page.t