Docs: add ink to merging maps to Getting Started page

doc/help/docs/manual/GettingStarted.mdx

@@ -33,8 +33,8 @@ This what they do, from left to right:
 * **Redo** Redo the last action (e.g. if you have just undone the creation of a factor, this will return the factor to the network).
 * **Bin** First, select a factor or a link by clicking on it.  Note that the selected factor or link gains a shadow and is listed in the status bar at the bottom of the window. Then click on the Bin button (or press the backspace or delete keys) - the factor or link is deleted.  The Undo button will restore it if you deleted it by mistake.
 * **Share** Shows a dialog box with a web link that you can copy and send to someone else.  If they then access that link, they will see your network and can edit and add to it. See [Sharing](#sharing) below.
-* **Open** Read in a file containing a network from your computer drive.  See [Reading and Saving](/manual/Files#reading-and-importing-maps) for supported file formats.  The content of the file replaces the network in the browser.
-* **Save**  Save the network in a file on your computer. The file is saved in the app's own format, or if you click on the small triangle next to the button, you can choose to save an image of the map as a high resolution image (a .PNG file), or the map data in GML (Graph Markup Language) or CSV (Comma Separated Values) formats. See [Reading and Saving](/manual/Files#saving-and-exporting-maps) for further details.
+* **Open** Read in a file containing a network from your computer drive.  See [Reading and Saving](/manual/Files#reading-and-importing-maps) for supported file formats.  If you hover over the small triangle next to the button, you can choose whether the content of the file replaces the network in the browser or is [merged](/manual/Cloning#merging-maps) with it (if you click on the button itself, the file replaces the network).
+* **Save**  Save the network in a file on your computer. The file is saved in the app's own format, or if you hover over the small triangle next to the button, you can choose to save an image of the map as a high resolution image (a .PNG file), or the map data in GML (Graph Markup Language) or CSV (Comma Separated Values) formats. See [Reading and Saving](/manual/Files#saving-and-exporting-maps) for further details.
 * **Search** Search for factors by name.
 * **Help** Display this help page in a separate browser tab.
 * **Settings** Opens a panel that allows much more customisation and exploration of the network (see [Styling the map](/manual/Styling#styling-the-map) and [Analysing the map](/manual/Styling#analysing-the-map)).

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "participatory-system-mapper",
-	"version": "2.3.5",
+	"version": "2.3.6",
 	"description": "Participatory System Mapper, browser app for collaboratively creating system maps",
 	"keywords": [
 		"social network",