Thread:Penguin-Pal/@comment-1731233-20150614082115/@comment-4018164-20150614111055

Well, you cannot use an unescaped "|" sign in a template, because this way whatever content after it will be treated as a different parameter. You could, however, keep a reserved character or sequence of characters, which the template will replace with ! for everyone. For instance, the following example will treat the sequence @@ as a pipe sign, to specify captions if needed:
 * Template


 * Usage

This could be a useful and a more user-friendly solution for your wiki. Also, check the additional parameters that Spottra has posted on that thread- it sure looks useful for modifications for your gallery.