This will change URLs generated by all objects within the same container as the SiteRoot. If a Base is specified (or a SiteRootBASE value can be found) then it will replace the host:port/script portion of generated URLs. If a Path is specified (or a SiteRootPATH value can be found) then it will replace the remainder of each URL.

Values affected include DTML variables starting with URL or BASE, and the absolute_url() methods of objects.

If Base is not set, the SiteRoot will first attempt to acquire SiteRootBASE and then search the REQUEST for it. The same holds for Path and SiteRootPATH.

Base (if specified) should always start with "http://"