In all but one of the six previous runs, there was a recession in the period.
The previous longest run of this type was 19 matches in 1963.
We've got good plots on about half the previous runs.
Billy's mother and sister have also appeared in previous runs of the strip.
The route changes each time but starts from the finishing point of the previous run.
By 2105, System population was a figure familiar from their previous runs: 5.6 billion.
From our previous run we got a lot of data.
A function determines whether the run should be merged with previous runs.
The reason why this episode was not chosen to finish the previous run is unknown.
There were some rare colors produced just as in every previous run.