[Zope] base href weirdness

Interesting. If you get a page from Zope by requesting the name of the folder, it renders whatever index_html it finds (either in the folder or by acquisition), and adds a "<base href="location of your zope server">" to the generated HTML. If you ask for the object directly, like "http://my.site/Zope/index_html", no "<base href="...">" is generated. Why is this? And why is the "base href" necessary? I've never seen it anywhere other than Zope (of course, I don't do a "view source" on every site I visit). dave (<base href="mailto:davidbro@namshub.org">)