add configuration resolution order section

docs/automate/cmemc-command-line-interface/configuration/index.md

@@ -38,3 +38,17 @@ In order to work with cmemc, you have to configure it according to your needs.
     In addition to that, cmemc can work with [custom certificates](certificate-handling-and-ssl-verification/index.md).
 
 </div>
+
+!!! info "Configuration value resolution order"
+
+    When the same key is defined in multiple places, cmemc resolves values in the following order:
+
+    1. **Named connection section** — When you run cmemc with a specific connection (e.g. `-c my-connection`), all keys from the corresponding `[my-connection]` section are used.
+    This takes full precedence, including over OS environment variables, so you can define self-contained, reproducible connection profiles that are not affected by your shell environment.
+
+    2. **Environment variables** — If a key is set as an [environment variable](environment-based-configuration/index.md) and no named connection section is active, the environment variable value is used.
+
+    3. **`[DEFAULT]` section** — The `[DEFAULT]` section in [`cmemc.ini`](file-based-configuration/index.md) acts as a fallback for all connections.
+    Its values are ignored if the same key is already set as an environment variable.
+    Keys present in the `[DEFAULT]` section but absent from the named connection section still apply as a fallback.
+