Hard cap on the track's span in decades. Bounds the floor from below so the
useful region is never more than this many decades under the track's top —
whether the floor was lowered to include a κ far below the nominal floor, or
the top was raised toward the ceiling for a very large authored κ. In both
cases the region compressed off the track is already visually
indistinguishable from its neighbour.
Hard cap on the track's span in decades. Bounds the floor from below so the useful region is never more than this many decades under the track's top — whether the floor was lowered to include a κ far below the nominal floor, or the top was raised toward the ceiling for a very large authored κ. In both cases the region compressed off the track is already visually indistinguishable from its neighbour.