Example prodding the start of the printed ID sequence to identify cases where a
test is depending on current numbering starting at 0. Might be useful to flag
tests too constrained that will cause pain when updating.
Using MINSTD and LINE as simple (and might even be overkill as 5 as
starting value would work too).
More of an exploration than something we have to do :)
qq: do we document anywhere these keys used for tweaking different things?