Wikipedia has a small perversion regarding pangepage name casing: it will convert the first character of a page name to uppercase, regardless of the way it was entered. To compensate, it also converts the first letter of a template (when transcluded) and module (when invoked) to uppercase. however, this does not extend to the sandbox, because in the sandbox "the first letter" is not the first letter any more. Here is an actual example: for real modules, let's say [[Module:String]], mediawiki software will allow you to use <nowiki>{{#invoke:String|replace|Hara I am|a|e}}</nowiki> to return "Here I em" (try it). It will also allow you to use <nowiki>{{#invoke:string|replace|Hara I am|a|e}}</nowiki> to get the same result:
