This method creates a self contained HTTP request that asks the browser to
present the login dialog into which the user must type the username and
password. The password is then validated by the Web server typically
against the NT (or Windows) user database. The exact validation varies by
Web server - IIS uses the NT User database on the server.
This mechanism works through Basic Authentication which is part of the HTTP
Optional - The realm as its known in HTTP terms is the domain name or IP
address of the server.
The HTML text to display if an error occurs with login validation. IOW, if
the user types in the wrong password this is what they'll see. This text is
See also:Class wwPageResponse
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