Content "Body" Layout Templates
Templates are a default feature of the Editor, but they've been customized for Mura to provide an easy way to insert multi-column layouts into the body of your page.
This only effects the output of the main content area, or body region, of the final HTML page.
These templates are completely independent of which "Theme Layout Template" you are using. For example, you might have the three_column.cfm theme Layout Template assigned to a page, and use the 3 Column body layout template, resulting in something like the home page below: