add a bit more information
== Running ==
You can run the tests manually by issuing a
<code>make <testname>.pid </code> command. After you've done c/r-ing it you should run <code>make <testname>.out </code> and check for the <testname>.out file contents.
If you don't want to mess with this you can use the <code>zdtm.sh</code> script. When launched without arguments runs all the tests one-by-one. The exact test can be specified by the command line argument. The <code>-l</code> option lists the tests it can run.