diff --git a/CHANGELOG.md b/CHANGELOG.md
index 973091c..206187d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ### Change Log for Node-RED Worldmap
 
+ - v1.5.30 - Add tooltip option, ability to remove base layer, search on icon, show mouse pointer co-ordinates
  - v1.5.29 - remove lat/lon from popup if using .popup property. Allow icon to be loaded from http.
  - v1.5.28 - Tidy up popup location and timing. Auto add countries overlay if no internet.
  - v1.5.27 - Add hide right click option to config panel
diff --git a/README.md b/README.md
index 628ff0a..4c31102 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ map web page for plotting "things" on.
 
 ### Updates
 
+- v1.5.30 - Add .tooltip option, ability to remove base layer, search on icon, show mouse pointer co-ordinates
 - v1.5.29 - Remove lat/lon from popup if using .popup property. Allow icon to be loaded from http.
 - v1.5.28 - Tidy up popup location and timing. Auto add countries overlay if no internet.
 - v1.5.27 - Add hide right click option to config panel
@@ -284,7 +285,11 @@ Optional properties include
 
 #### To switch layer, move map and zoom
 
-    msg.payload.command = { "layer":"Esri Satellite", "lat":51, "lon":3, "zoom":10 };
+    msg.payload = { "command": { "layer":"Esri Satellite", "lat":51, "lon":3, "zoom":10 }};
+
+You can also use the name "none" to completely remove the base layer,
+
+    msg.payload = { "command": { "layer":"none" }};
 
 #### To add and remove a user defined button
 
@@ -323,10 +328,6 @@ style server by adding a property `wms: true`. (see overlay example below)
         "opt":{ "maxZoom":19, "attribution":"© OpenStreetMap" }
     };
 
-Note: you can use the name "none" to completely remove the base layer for example.
-
-   msg.payload = {"command":{"layer":"none"}};
-
 #### To add a WMS overlay layer - eg US weather radar
 
 To add an overlay instead of a base layer - specify the `overlay` property instead of the `name`.
@@ -405,10 +406,10 @@ in a function node:
         overlay: "New York Historical",
         url: 'https://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg',
         bounds: imageBounds,
-        opt: { opacity:1.0, attribution:"© University of Texas" }
+        opt: { opacity:0.8, attribution:"© University of Texas" }
     };
 
-#### To clear a layer from the map
+#### To clear all markers from a layer, or an overlay from the map
 
     msg.payload.command.clear = "name of your layer/overlay to remove";
 
diff --git a/package.json b/package.json
index ff56bb0..9ab39a0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "node-red-contrib-web-worldmap",
-    "version": "1.5.29",
+    "version": "1.5.30",
     "description": "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies": {
         "cgi": "0.3.1",
diff --git a/worldmap/worldmap.appcache b/worldmap/worldmap.appcache
index 24f8a83..e66c8a5 100644
--- a/worldmap/worldmap.appcache
+++ b/worldmap/worldmap.appcache
@@ -1,5 +1,5 @@
 CACHE MANIFEST
-# date: Mar 2nd 2019 - v1.5.29d
+# date: Mar 2nd 2019 - v1.5.30
 
 CACHE:
 index.html