When you say "child links," do you mean any links from the starting page, even
if they are on a different server?
E.g., if I run a test on serv.1.org/index.html which does not require a logon,
and I test a link on that page to another.serv.net/help.html, which requires a
login, can I just do user:passwd@serv.1.org/index.html (no login actually
required) and have that automatically appended to to any external link?