This code should be added at the bottom of the template code, with no extra space before "<noinclude>" (which would cause extra space on pages where the template is used). The parameter can be used as shown above to transclude an arbitrary documentation page.
Overrides exist to customize the output in special cases:
{{documentation| heading = ...}} − change the text of the "documentation" heading. If this is set to blank, the entire heading line (including the first [edit] link) will also disappear.
If the documentation page doesn't exist, the "edit" link includes a preload parameter so that clicking it will pre-fill the edit form with the basic documentation page format.
Use of this template allows templates to be protected where necessary, while allowing anyone to edit the documentation, categories, and interwiki links.