 CHILDREN = "_CHILDREN"
 AUTHORITY = "_AUTHORITY"
 EXPORTS = "_EXPORTS"
+HANDLERS = "_HANDLERS"
 INDEX = "_INDEX"
 CSS = "_CSS"
 

    assert cache_rx, "cache_rx"
    @doc = cache_rx.map()
    assert _.isString(label), "label is string"
    @doc.put(LABEL, label)
    @doc.put(CHILDREN, cache_rx.array())
    @doc.put(RX, rx) if rx?
    
  # reactive-coffee tags and binding

      value = @_import_children(value) if key == CHILDREN
      value = @rx().array(value) if _.isArray(value)
      @put(key, value)
    @_export_events @find_path(".")
    this

  _spawn_world: (label) ->
