WikiLinks can be entered in any case you like, the page they link to is
always lowercased.
+While a WikiLink is limited to alphanumerics and only a few special
+charaters, it is possible to create page names containing other characters:
+
+* To display a page name with a space in it, use "_" in the WikiLink, for
+ example, [[Multi_Word_Page_Name]].
+* For any other special character, you can use "__nnnn__" where `nnnn` is the
+ unicode character number. For example,
+ [[This_page_name_is__44___uselessly__44___a_complete_sentence__46__]]
+ Limiting use of this to when you really need it is a good idea.
+
Note that if the file linked to by a WikiLink looks like an image, it will
be displayed inline on the page.