 + 01  Experiment                                                                    ... ok [time:1]
 + 02a Exp1                                                                          ... ok [time:1]
 + 02b Exp2                                                                          ... ok [time:1]
 + 03  Symbolic Differentation                                                       ... ok [time:2]
 + 04  Assignment                                                                    ... ok [time:2]
 + 05a AssignTwoType                                                                 ... ok [time:1]
 + 05b AssignTwoType                                                                 ... ok [time:1]
 + 06  Advanced                                                                      ... ok [time:1]
 + 08  Pam                                                                           ... ok [time:1]
 + 09  Pam Decl                                                                      ... ok [time:1]
 + 11  Petrol                                                                        ... ok [time:2]
