 
   # Extended: Sets the buffer position of the marker's head.
   #
-  # * `screenRange` The new {Point} to use
+  # * `bufferPosition` The new {Point} to use
   # * `properties` (optional) {Object} properties to associate with the marker.
   setHeadBufferPosition: (bufferPosition, properties) ->
     @bufferMarker.setHeadPosition(bufferPosition, properties)


  # Extended: Sets the screen position of the marker's head.
  #
  # * `screenRange` The new {Point} to use
  # * `properties` (optional) {Object} properties to associate with the marker.
  setHeadScreenPosition: (screenPosition, properties) ->
    screenPosition = @displayBuffer.clipScreenPosition(screenPosition, properties)


  # Extended: Sets the screen position of the marker's tail.
  #
  # * `screenPosition` The new {Point} to use
  # * `properties` (optional) {Object} properties to associate with the marker.
  setTailScreenPosition: (screenPosition, options) ->
    screenPosition = @displayBuffer.clipScreenPosition(screenPosition, options)
