Editing Encyclopedia:MediaWiki FAQ (section)

== What changes have been made to the use of certain punctuation marks in titles? ==

Many punctuation marks and special characters can now be part of the title. Details are still subject to change.

For the moment, it should be safe to use the following characters: <b>-, . ( ) ' / ! & : ;</b>. It is also possible to use the underscore (<b>_</b>); however, those are converted to spaces.

You cannot currently use the following: <b>" # $ * + < > = ? @ [ ] \ ^ ` { } | ~</b>

The colon (''':''') is a special case; it is used to indicate ''namespaces'' for special pages (see above) and should only ever be used in the name of a regular title where ''strictly necessary'' for correctness (as in [[2001: A Space Odyssey]]). Ordinary articles can never start with any of the reserved namespace prefixes followed by a colon: please note that using colons unnecessarily in article titles will complicate the management of namespaces later on.