[plt-scheme] servlet2.ss, servlet.ss, etc.

Hi

I've got a question about Matthias' remarkable 2002 paper, "Developing
Interactive Web Programs" (here:
http://www.ccs.neu.edu/scheme/pubs/afp2002-f.ps).

Does any of the code described in the paper work anymore?  I notice it
can be found in PLT/collects/htdp/servlet2.ss but it doesn't seem to
work.  Has it been superseded by servlet.ss?  Most of the (names of)
functions defined in htdp/servlets2.ss seem to be there.  (There's no
"inform" function in servlet.ss, though.)

Thanks in advance.

-Ethan