Update README.md

README.md

@@ -13,6 +13,7 @@ Differences with HTTP Switchboard:
         - Z is the source hostname axis (aka "scope"), from narrower scopes to global scope
         - X is the request type axis: `*`, `cookie`, `css`, etc.
         - Y is the destination hostname axis (`www.example.com`, `example.com`, `com`, `*`)
+    - Thus, **every** request is evaluated starting from the scope as per request's hostname, down to global scope if no explicit rule is found on the way down.
     - Switching scopes in matrix popup does not create/delete scopes, this just allows a user to modify rules in a specific scope
         - Rules in narrower scope(s) still exist and are enforced even if you have the global scope selected
 - Settings which no longer exist: