regexp that matches newline characters?

[Dmitri Minaev]

I tried to extract a tag from an xml file to parse it later, but I
can't find a regexp that would match an xml tag with its content,
including newlines. Dot doesn't match newlines. The elisp manual
mentions that "complemented character alternative" matches a newline,
so I used this funny template:\\(<author>[^±]*?</author>\\). Of
course, this is not the right thing to do. What would be the correct
regular expression?

-- 
With best regards,
Dmitri Minaev

Russian history blog: http://minaev.blogspot.com