This exercise can be completed without internet access during the exercise, provided
that you have a recent version of the "theta" program.

Before the school, you installed "theta" from subversion, or
the virtual machine, which includes theta. In both cases, it is
assumed that you have a recent version (updated last Friday or later).

In you browser, go to
file://<theta-svn>/utils2/examples/infn2013/exercise-sheet/html/index.html
where <theta-svn> is the path where "theta" has been checked
out from subversion.

If this file does not exist, you probably have an outdated version of "theta".
In this case, execute "svn up" in the <theta-svn> directory.