sample-against-sweep
Drawn at its defaults, in the second band, cut whole. It takes no options at all, so every essay calling it gets this exact drawing.
Called by 3 essays
the blast radius of changing it
A band with nothing inside it
Five offsets wreck on the Lucas 7/11 band and every one of them keeps the same family at every rise it wrecks at. There are no islands, no transition region and no period to look for, which is what makes the picture from the other band a picture of that band.
Stems and conesThe second band, cut whole
One band was cut at every one of its rises and came back with a transition region — a stretch where three offsets change their answer, in short islands with uneven gaps. The obvious question is whether that is a picture of bands or a picture of that band. The other wide band answers it.
Stems and conesWhen nine rises are enough
A coarse design was shown to be misleading on one band and it has been criticised on that ground ever since. On the second band it is exactly right, and the difference between the two cases is a property of the band rather than of the design — which is the awkward part.