We have put our wiki on a subdomain via mod_rewrite, so instead of http://example.com/wiki the url is http://wiki.example.com. However, urls that wiki generates from [[page_name]], still look like http://example.com/wiki/page_name and not http://wiki.example.com/page_name (which is pretty predictable, of course). What’s the most valid and/or simple way to change that?