avail                   Availability (1 - unavailability / total)
fr                      Failure rate (lambda)
lda                     Launch the Life Data Analysis Tutorial
mtbf                    Mean Time Between Failures (MTBF) for
                        repairable items.
mttf                    Mean Time To Failure (MTTF)
ram                     Launch the RAM Analysis Tutorial
rbd                     Launch the Reliability Block Diagram Tutorial
rel                     Reliability (1 - outage / total)
rs                      Launch the Repairable Systems Analysis Tutorial
rt                      Launch the Reliability Testing Tutorial
