diff --git a/doc.md b/doc.md
index c82cafb5..856edfbe 100644
--- a/doc.md
+++ b/doc.md
@@ -1,7 +1,7 @@
 # LibreSpeed
 
 > by Federico Dossena  
-> Version 5.1
+> Version 5.2
 > [https://github.com/librespeed/speedtest/](https://github.com/librespeed/speedtest/)
 
 ## Introduction
@@ -156,32 +156,32 @@ Edit `index.html`, you will see a list of servers:
 ```js
 var SPEEDTEST_SERVERS=[
 	{
-		name:"Speedtest Demo Server 1", //user friendly name for the server
-		server:"//mpotdemo.fdossena.com/", //URL to the server. // at the beginning will be replaced with http:// or https:// automatically
-		dlURL:"garbage.php",  //path to download test on this server (garbage.php or replacement)
-		ulURL:"empty.php",  //path to upload test on this server (empty.php or replacement)
-		pingURL:"empty.php",  //path to ping/jitter test on this server (empty.php or replacement)
-		getIpURL:"getIP.php"  //path to getIP on this server (getIP.php or replacement)
+		"name":"Speedtest Demo Server 1", //user friendly name for the server
+		"server":"//mpotdemo.fdossena.com/", //URL to the server. // at the beginning will be replaced with http:// or https:// automatically
+		"dlURL":"garbage.php",  //path to download test on this server (garbage.php or replacement)
+		"ulURL":"empty.php",  //path to upload test on this server (empty.php or replacement)
+		"pingURL":"empty.php",  //path to ping/jitter test on this server (empty.php or replacement)
+		"getIpURL":"getIP.php"  //path to getIP on this server (getIP.php or replacement)
 	},
 	{
-		name:"Speedtest Demo Server 2",
-		server:"//mpotdemo2.fdossena.com/",
-		dlURL:"garbage.php",
-		ulURL:"empty.php",
-		pingURL:"empty.php",
-		getIpURL:"getIP.php"
+		"name":"Speedtest Demo Server 2",
+		"server":"//mpotdemo2.fdossena.com/",
+		"dlURL":"garbage.php",
+		"ulURL":"empty.php",
+		"pingURL":"empty.php",
+		"getIpURL":"getIP.php"
 	}
 	//add other servers here, comma separated
 ];
 ```
 
 Replace the demo servers with your test points. Each server in the list is an object containing:
-* `name`: user friendly name for this test point
-* `server`: URL to the server. If your server only supports HTTP or HTTPS, put http:// or https:// at the beginning, respectively; if it supports both, put // at the beginning and it will be replaced automatically
-* `dlURL`: path to the download test on this server (garbage.php or replacement)
-* `ulURL`: path to the upload test on this server (empty.php or replacement)
-* `pingURL`: path to the ping test on this server (empty.php or replacement)
-* `getIpURL`: path to getIP on this server (getIP.php or replacement)
+* `"name"`: user friendly name for this test point
+* `"server"`: URL to the server. If your server only supports HTTP or HTTPS, put http:// or https:// at the beginning, respectively; if it supports both, put // at the beginning and it will be replaced automatically
+* `"dlURL"`: path to the download test on this server (garbage.php or replacement)
+* `"ulURL"`: path to the upload test on this server (empty.php or replacement)
+* `"pingURL"`: path to the ping test on this server (empty.php or replacement)
+* `"getIpURL"`: path to getIP on this server (getIP.php or replacement)
 
 None of these parameters can be omitted.
 
@@ -191,6 +191,23 @@ __Important__: For HTTPS, all your servers must have valid certificates or the b
 
 __Important__: Don't use my demo servers, they're slow!
 
+If your list of servers changes often, you might not want to have it hardcoded in the HTML file. LibreSpeed can load the server list from a JSON file. To do this, edit `index.html` and replace the list of servers with this:
+```js
+var SPEEDTEST_SERVERS="your URL here";
+```
+
+The URL doesn't need to be complete, it can just point to a file in the current directory. The URL should point to a JSON file with the same format used above:
+```js
+[
+    {
+        "name":...
+    },
+    ...
+]
+```
+
+__Important:__ The same origin policy applies to which URLs you can and cannot load with this method. If possible, it's best to just point it to a file on the current server.
+
 ##### Telemetry and results sharing
 Telemetry is stored on the frontend server. The setup procedure is the same as the single server version.
 
@@ -535,6 +552,11 @@ Note that this will add `mpot`:`true` to the parameters sent to the speedtest wo
 ##### addTestPoints(list)
 Same as addTestPoint, but you can pass an array of servers
 
+##### loadServerList(url,result)
+Loads a list of servers from a JSON file pointed by the `url`.
+
+The process is asynchronous and the `result` function will be called when it's done. If the request succeeded, an array containing the list of loaded servers will be passed to the function, otherwise `null` will be passed.
+
 ##### getSelectedServer()
 Returns the selected server (multiple points of test)