how to make Netsurf forget its logged-in state

I'm tinkering with something on my own website, an area that requires
the viewer to provide a username and password.

I successfully get in with my own username and password. Now I want
to test those of another user.

So I click the link that takes me to the subsite -- and I'm straight
in; I don't see any box asking for username and password.

Tried Ctrl-F5, menu Reload, tried deleting from the History file,
tried quitting and relaunching Netsurf. Still never see the login box
again.

How do I "log out"? (If that's the correct term in this situation.
Maybe it's more like changing the "state".)

--
Jim Nagel www.archivemag.co.uk