Currently there are many characters that are not valid for use in the Wiki title. A big reason is due to the way JSP Wiki handles wiki links in its content. By encoding wiki links before JSP Wiki is given the content, we can provide the ability to use more characters in the wiki title.
Note: Tomcat needs a property to be set before an encoded forward slash is allowed to be used in the URL. If this is a character that is going to be used, set this property: