content: usage: advanced: DIY config style inheriting and auto-saving

Author: ES-Alexander

content/usage/advanced/diy-widget-config.png

@@ -689,11 +689,15 @@ modifying basic appearance characteristics:
 It is possible to change the decimal resolution of the displayed statistics, and the limit the number
 of plotted samples to improve visibility and performance.
 
-#### Do It Yourself Widget
+#### Do It Yourself (DIY) Widget
 
 - Completely custom elements, code logic, and styling
 {{ easy_image(src="diy-widget-config", width=550, center=true) }}
 - Runs code automatically when Cockpit starts/refreshes
+- Can save and apply updates automatically (while editing), or be configured to only apply changes manually
+   - Auto-save should generally be disabled while editing JavaScript functionality, but can be convenient
+     while modifying a widget's visual interface / styling
+- Can inherit styles from the Cockpit interface, or use completely independent styles
 - Can listen to, create, and modify [data-lake variables](#data-lake), and register and/or execute Actions
 using the Cockpit API (`window.cockpit.*`)
 - Can be exported to or imported from a JSON file with `"html"`, `"css"`, and `"js"` string fields