Update adding-ai-to-vscode-using-continue.mdx

Author: fpagny

pages/generative-apis/reference-content/adding-ai-to-vscode-using-continue.mdx

@@ -96,4 +96,19 @@ After configuring the API, open VS Code and activate Continue:
 
 <Message type="important">
   Enabling tab completion **may lead to higher token consumption** as the model generates predictions for every keystroke. Be mindful of your API usage and adjust settings accordingly to avoid unexpected costs. For more information, refer to the [official Continue documentation](https://docs.continue.dev/reference#tabautocompleteoptions).
-</Message>
+</Message>
+
+### Going further
+
+You can add additional parameters to configure your model behaviour by editing `config.json`.
+For instance, you can add the following `systemMessage` value to modify LLM messages `"role":"system"` and/or `"role":"developer"` and provide less verbose answers:
+```json
+{
+  "models": [
+    {
+      "model": "...",
+      "systemMessage": "You are an expert software developer. You give concise responses."
+    }
+  ]
+}
+```