diff --git a/Dashboard:-Trusted-sites.md b/Dashboard:-Trusted-sites.md
index 9fcf350..3063993 100644
--- a/Dashboard:-Trusted-sites.md
+++ b/Dashboard:-Trusted-sites.md
@@ -17,22 +17,31 @@ The _Trusted sites_ pane allows you to review or edit the existing trusted site
 
 There are predefined trusted site directives when you first install uBO:
 
-    about-scheme
     chrome-extension-scheme
+    moz-extension-scheme
+
+For Firefox Legacy platform, `behind-the-scene` is also in this predefined trusted sites list.
+
+<details>
+<summary>Obsolete, no longer used directives.</summary>
+
+Removed in [1.56.1b1](https://github.com/gorhill/uBlock/commit/439a059cca5642da44ee620c0a21a57b194d109a):
+
+    about-scheme
     chrome-scheme
     edge-scheme
-    moz-extension-scheme
     opera-scheme
     vivaldi-scheme
     wyciwyg-scheme
 
-For Firefox Legacy platform, `behind-the-scene` is also in this predefined trusted sites list.
+</details>
 
-You should not remove these predefined trusted site directives, unless you know _exactly_ the consequences of doing so.
+>[!CAUTION]
+>You should not remove these predefined trusted site directives, unless you know _exactly_ the consequences of doing so.
 
-Removing the predefined trusted site directives without understanding the consequences could cause your browser to malfunction. **This is especially true for the `behind-the-scene` trusted site directive on Firefox Legacy platform.**
+Removing the predefined trusted site directives without understanding the consequences could cause your browser to malfunction. This is especially true for the `behind-the-scene` trusted site directive on Firefox Legacy platform.
 
-If despite this warning you still want to remove one or more of the predefined trusted site directives, I strongly suggest to comment out an entry rather than outright delete it. To comment out an entry, just prefix it with `#`. This way you do not have to remember which predefined trusted site directive you removed, it will be just a matter of removing the `#` prefix if ever you want to restore an entry. After [1.19.3b7 ](https://github.com/gorhill/uBlock/commit/f7bbc807176fa93680fdaf8b713593a43a3df2a5) removed _predefined trusted site directives_ are commented out automatically.
+If despite this warning you still want to remove one or more of the predefined trusted site directives, I strongly suggest to comment out an entry rather than outright delete it. To comment out an entry, just prefix it with `#`. This way you do not have to remember which predefined trusted site directive you removed, it will be just a matter of removing the `#` prefix if ever you want to restore an entry. After [1.19.3b7 ](https://github.com/gorhill/uBlock/commit/f7bbc807176fa93680fdaf8b713593a43a3df2a5) removed, _predefined trusted site directives_ are commented out automatically.
 
 ### Trusted sites directive syntax