Some sites may contain mix of prefixed and non-prefixed URI's. For example, domain
http://www.example.com may have links to both
http://example.com. If configured correctly, the non-WWW links should redirect to the WWW links (or vice-versa), but if not, or if you want to copy a site without the interim redirects, WebCopy can help.
When this option is set, WebCopy will automatically transform any links that match the source host, but either have a WWW prefix and the source does not, or do not have a WWW prefix while the source does.
Note that this option only applies to URI's matching the host domain; it will not apply to any external domains included in the copy.