Add description of connection readonly mode

Author: chrjorgensen

src/content/docs/settings/connection.mdx

@@ -1,11 +1,26 @@
 ---
-title: Connection 
+title: Connection
 ---
 
 import { Aside } from '@astrojs/starlight/components';
 
 Multiple connections can be defined and some settings are specific to a connection and can be saved for the connection and later reloaded.
 
+### Read only mode
+
+When checked, you can not change any content on the server, run any actions on the server or open any terminal.
+You can only browse the content of the server, and members and streamfiles will always be opened in readonly mode.
+
+<Aside type="note">
+    This setting can be controlled by the IBM i system administrator in the [system settings](../system/).
+</Aside>
+
+<Aside type="danger">
+    This setting can only protect against changes from Code for IBM i. It will not protect against changes from any other interface or application.
+
+    Configuration of IBM i object security on the server is advised!
+</Aside>
+
 ### Current library
 
 The library which will be set as the current library during compilation.

src/content/docs/settings/settings_json.png

@@ -8,10 +8,10 @@ As of Code for IBM i 2.16.3, the extension supports system-wide settings that ca
 
 All configuration files related to VS Code settings should be stored under `/etc/vscode/` in the IFS.
 
-![](./settings_json.png)
-
 ### Code for IBM i settings
 
+![](./settings_json.png)
+
 The path is `/etc/vscode/settings.json`. The top level is a JSON object that can contain different properties. Below is a table for the first level of properties. If sub-properties are not described here, refer to the content assist while working on the file.
 
 | Property   | Description |