The code literal is very basic in its appearance, but allows for advanced interaction with your page.
When you add a code literal to a content zone, you will be presented with a simple text box.
The key point to remember about this control is that whatever you type into the box will be returned to the page exactly as is. This allows you to emit HTML markup or javascript on the page.
For example, the following screenshot is a representation of what was used to create the demo below the image:
This is a code literal demo.