A permanent link (or permalink) is a link to a specific version of a wiki page. Normal links always lead to the most current version of a page. However the permalink leads to the text as it was at the time it was applied; the text does not include any edits made afterwards. Unlike the name suggests, the permalink does not show exactly the same page, only the main text is guaranteed to be retained.
The pictures and templates are still shown at their current version. The boxes with text and images placed in the pages' right-top corner are also shown in their current version. Permalink is made by clicking 'permanent link' in the sidebar's toolbox or by accessing a prior version of a page from its history tab. Both will display that version and the page's URL can be used as the target of the permalink.