Required?: YES (Within a content-handler block)
Max Length: 100 characters
Legal Characters: us-ascii only
The listitem icon is displayed on a content area page.
When naming this icon, create two versions, one with _on in the name and one with _non in the name. Configure the _on version in the XML. If the item is unavailable it is displayed using the _non icon.
If the locale:key is provided as well as a basic path inside the element then the locale:key value is used and the element text is ignored. This key is located in the bundle of the current locale per bundle action to localize images if required.