diff --git a/externs/xol.js b/externs/xol.js
index 47cfc14ec6..8b6992537d 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -1,17 +1,4 @@
 
-/**
- * @typedef {Object} layer_BaseOptions
- * @property {number|undefined} opacity Opacity (0, 1). Default is `1`.
- * @property {boolean|undefined} visible Visibility. Default is `true`.
- * @property {ol.Extent|undefined} extent The bounding extent for layer rendering.  The layer will not be rendered
- * outside of this extent.
- * @property {number|undefined} zIndex The z-index for layer rendering.  At rendering time, the layers will be
- * ordered, first by Z-index and then by position. The default Z-index is 0.
- * @property {number|undefined} minResolution The minimum resolution (inclusive) at which this layer will be visible.
- * @property {number|undefined} maxResolution The maximum resolution (exclusive) below which this layer will be visible.
- */
-
-
 /**
  * @typedef {Object} layer_LayerOptions
  * @property {number|undefined} opacity Opacity (0, 1). Default is `1`.
@@ -1155,16 +1142,6 @@
  */
 
 
-/**
- * @typedef {Object} ViewState
- * @property {ol.Coordinate} center
- * @property {module:ol/proj/Projection~Projection} projection
- * @property {number} resolution
- * @property {number} rotation
- * @property {number} zoom The current zoom level.
- */
-
-
 /**
  * @typedef {Object} style_AtlasManagerOptions
  * @property {number|undefined} initialSize The size in pixels of the first atlas image. Default is `256`.