A nanoimprint mold is described, comprising a plurality of alternating layers of distinct materials differentially etched along an edge thereof, said layers having spatially varying thicknesses along said edge such that nanolines patterned with said nanoimprint mold have corresponding spatially varying pitches. The migration functionality operates by receiving factor information that describes a context in which a user is using an application on a first user device. The preamble has a first training sequence and a second training sequence, wherein the second training sequence is a phase rotation of the first training sequence. Once loaded, the retention pin 115 is reinserted. Each tool head of the first plurality of tool heads is pivotable about the first pivot axis independently of the other tool heads of the first plurality of tool heads. Each surface accommodates a different substrate size and thereby accommodates four different widths of substrates.