The group element:

With the group element you create a subtree or group of element, that can be exported and included in other templates. You can also use the group element to divide your layout into logical sections making it easier to maintain your template. You group elements by placing them in the same group element, This makes it very easy, if you want to change the position for them all (or change another style attribute).

In the example above we are using a group to define a header, which can be imported in other templates and inserted via the include element. The import should refer to the template file, and the include refer to the name stated in the export field above (Header).