anchor.diff:  is needed, and no more, is on the sample stick. If not, revisit the
   previous steps. If that is okay, continue for the remaining batches.
   
  +[TIP]
  +To be on the safe side, and because of the warning before, make a
  +(tar) backup of both the repositories under /home/exam named
  +EXAMxyz-repo and all sandboxes under
  +/home/exam/Desktop/examproject-EXAMxyz. Convention: name the tar files
  +after the exam, e.g JAVA120161103-repo.tgz and
  +JAVA120161103-sandboxes.tgz
  +
   Once you have primed all sticks, you are ready to rock.
  +
  +==== Take the exam
  +
  +During the exam you will hand out the sticks to students in almost
  +random order. To be able to associate a stick with a student, you
  +should not who receive which stick.
   
   [NOTE]
   During exam you must somehow register which student got which
  
positive.code: a barcode reader. Now the trick is to hand out the sticks in numerical
  (or reversed) order and scan into a spreadsheet, in which the first
  column holds the sequence numbers of the sticks you are going to use
  and next will be the student number. Save it in a file sticks.csv and
  commit it to the build too. Format of the csv file:
  [source,shell]
  ----
  
negative.code: # exit
  $
  ----
  
  === Collect Sandboxes and Repositories
  
  Once you have harvested all sticks, it is time to collect the work for
  correction. Since we allow students to use a repository, but do not
  want to make (im)proper use of said repository an issue for an exam,
  we need to make sure that the student repository is complete.
  
  ==== Make the last commit and backup.
  On the Preparation workstation do the following:
  
  . elevate your rights.
  . To do that, log in as exam used (`sudo -s` followed by a `su -l exam`)
  and walk to the exam users Desktop. 
  . Then directory-walk to the exam-user’s Desktop and for all repositories,
  do an `svn update` per sandbox (examproject-EXAMxyz) and then a final harvesting `svn
  commit` per sandbox. This will ensure that all work is in the
  repositories.
  . Make a tar of both the repos and the sandboxes.
  . secure copy the tars to you home dir on the correction server (osirix).
  
  If you feel the urge, you may want to put that in a script:
  
  [source,shell]
  ----
  for i in examproject-EXAM*; do svn up ${i}; svn ci -m'harvesting ' ${i}; done
  ----
  
  Once that is done create tar archives from both the sandboxes and the
  repositories and copy them both to the correction server.
  
  
  === Prepare for Correction
  
  We use the *corrector’s workbench* to correct the students
  work. Preparing this requires a few steps, some of them on the
  preparation workstation, some on the correction server, _osirix_.
  
  ==== Init the corrector’s work bench.
  
  