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git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@19693 71c3de6d-444a-0410-be80-ed276b4c234a

war/resources/help/update-center/proxy-username.html

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+<div>
+  This field works in conjunction with the proxy server field
+  to specify the username used to authenticate with the proxy.
+
+  <p>
+  If this proxy requires Microsofts <a href="http://en.wikipedia.org/wiki/NTLM">NTLM</a>
+  authentication scheme then the domain name can be encoded
+  within the username by prefixing the domain name followed
+  by a back-slash '\' before the username, e.g "ACME\John Doo".
+</div>