On a file description page, there is a Metadata section near the bottom. This has two columns, one for item names the other for values. Each name/value pair has a corresponding pair of pages in MediaWiki: namespace, containing the text to show for the name, or a formatting template for the value.
The pages for the values sometimes contain links, and it is possible to modify the input value $1 when constructing the link, in order to link to a suitable page. See for example http://en.wikipedia.org/wiki/MediaWiki:Exif-make-value (which formats the value associated with http://en.wikipedia.org/wiki/MediaWiki:Exif-make ) In this page, some makes of camera are given a piped link because the straight link would go to the wrong page - for example, [[Apple]] would go to the fruit, but [[Apple Inc.|Apple]] goes to the correct page.
Something similar is needed for http://en.wikipedia.org/wiki/MediaWiki:Exif-software-value (associated with http://en.wikipedia.org/wiki/MediaWiki:Exif-software ) but here the problem is that if $1 merely states a bare version number like 6.0, that might be ambiguous - in the context of an Apple iPhone, it should link to http://en.wikipedia.org/wiki/IOS_6 but if the camera is not an iPhone, that's clearly the wrong link. Either the value passed into $1 needs the camera make adding, or a second parameter needs to be added which has the camera make.
See http://en.wikipedia.org/wiki/File_talk:Torre_dei_Becci,_June_2013.jpg for background