   # Add a {Selection} based on the given {DisplayBufferMarker}.
   #
   # * `marker` The {DisplayBufferMarker} to highlight
-  # * `options` An {Object} that pertains to the {Selection} constructor.
+  # * `options` (optional) An {Object} that pertains to the {Selection} constructor.
   #
   # Returns the new {Selection}.
   addSelection: (marker, options={}) ->

  # Public: Get the most recent {Selection} or the selection at the given
  # index.
  #
  # * `index` Optional. The index of the selection to return, based on the order
  #   in which the selections were added.
  #
  # Returns a {Selection}.

  # Public: Mark the given position in buffer coordinates.
  #
  # * `position` A {Point} or {Array} of `[row, column]`.
  # * `options` (optional) See {TextBuffer::markRange}.
  #
  # Returns a {DisplayBufferMarker}.
  markBufferPosition: (args...) ->
