Michael,
I've been doing some internal documentation on url's and the 
differences in absolute and relative references. And I think that in 
a UNIX file system Tim's example may not necessarily be obvious. In 
URL space, as long as none of the references (xxxx,x,y) are 
cgi-scripts, you could say that /xxxx/./../x/../y/ is equal to /y/
If, however, x is a cgi script and ../y/ is the argument, then you've 
got a problem. There is a script called w3-msql that allows embedding 
database query statements in an html file, that would cause this type 
of problem. I'll see if I can create one, as a test on my server.
-John
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John Lindroth               lindroth@musc.edu
        http://www.musc.edu/~lindroth
Center for Computing & Information Technology
    Medical University of South Carolina
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Any opinions expressed are mine.
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