>>>In the last example it only matches
>>>

http://msdn.microsoft.com/en-us/library/

>>
>>I'll re-write the test program, for now this
>>
>>http://msdn.microsoft.com/en-us/library/aa172799(SQL.80.aspx - works as a valid HTML
>
>Why shouldn't it - Who says the parentheses must match ?
>

Nobody said - I guess that's OK to have mismatched parentheses. I haven't tested if we can have more than 2 of them. UPDATE. Yes, it allows many of them.

Ok, good luck - it's late for me now.