This template creates an anchor. It is useful for maintaining a link to a section where the section title has changed or may be changed in future.
The fixed way to link to a section is by including # between the page name and the section name, so this section right here is:
If you want this link to work even after someone might change the heading to something else, insert an anchor like this:
Then another page linking to #Documentation on this page will still go to that anchor on the page, even if the section name changes.