diff --git a/docs/imagesForWeb.pptx b/docs/imagesForWeb.pptx
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index 03b3953faf50..000000000000
Binary files a/docs/imagesForWeb.pptx and /dev/null differ
diff --git a/pxt-jacdac b/pxt-jacdac
index c4280eaadc59..78e2c68b8536 160000
--- a/pxt-jacdac
+++ b/pxt-jacdac
@@ -1 +1 @@
-Subproject commit c4280eaadc592075dcdc4288250cb998b89ae842
+Subproject commit 78e2c68b85363e580cc4c757fdce89a032e990f9
diff --git a/src/pages/clients/makecode/user-guide.mdx b/src/pages/clients/makecode/user-guide.mdx
index f2a3da527476..a70dd7056ae7 100644
--- a/src/pages/clients/makecode/user-guide.mdx
+++ b/src/pages/clients/makecode/user-guide.mdx
@@ -39,6 +39,20 @@ The micro:bit in dongle mode does not execute the user's program.
 In pxt-jacdac v1.8.41 and earlier, the dongle behaved a bit differently where both physical and simulated device could become dongle.
 The new behavior is designed to provide a better user experience.
 
+## Client role binding
+
+You can provide hints in the client role name in the form of URL query arguments to influence the binding algorithm:
+
+```sts
+export const btnB = new modules.ButtonClient("A?dev=self&srvo=1")
+```
+
+Supported arguments are:
+
+-  `dev=[id]` where `[id]` is the full device id or shortid. `self` is a special name that refers to the micro:bit device itself, it is used for servers.
+-  `srvi=[index]` where `[index]` is the service index
+-  `srvo=[index]` where `[index]` is the service offset, an index that only takes into account services of the same type.
+
 ## Multiple Roles
 
 When running your code, Jacdac binds the modules detected on the bus with the **roles** defined in your program.