Template:-

This template "clears" both margins; it is often used before a header to make sure that the header will be the full width of the page. Type - where you want to start a new section in full width. Some examples of the use of -: - Without the template:
 * Description
 * Syntax
 * Samples

Section 1
Text section 1.

Section 1.1
Text section 1.1.

Section 2
Text section 2.

- With the template:

Section 1
Text section 1. (The template is here)

Section 1.1
Text section 1.1.

Section 2
Text section 2.