Template:AppItem
|colspan="2"|
[[Special:myLanguage/{{{1}}}|{{{3}}}]]
|- |[[Image:{{{2}}}|48px|link=Special:myLanguage/{{{1}}}]]||
This template makes entries for application lists. It requires three arguments: A link (without the Special:myLanguage prefix), the name of an image file and a title. Even if the link and the title is the same, the title must be there since it should be translatable. It is meant to be used within a {| ... |} group and to be immediately followed by a short text.
The <h4> tag should mark it as a headline and make it appear in the list of contents, but apparently these tags are not picked up by the wiki software, when appearing inside a template. See System Settings for a page using this template along with other items entered "by hand". Using ==== won't work either - they can't appear inside a table, it seems.
Example:
{| {{AppItem|System Settings/Account Details|Image:Preferences-desktop-user.png|Account Details}} Some descriptive text. |}
displays
Account Details | |
Some descriptive text. |