A kit comprising rotating element sheet material and a gradient field stylus,
where
the sheet material comprises a plurality of rotatable elements disposed in a substrate
and in contact with an enabling fluid; where the substrate comprises a plurality
of sheet latching components; where one of the rotatable elements comprises first
and second rotatable latching components and a core configured to present a first
aspect in a first orientation and a second aspect in a second orientation, related
by a rotational transformation about an axis of the rotatable element; and where
one of the sheet latching components is proximal to the first rotatable latching
component in the first orientation and proximal to the second rotatable latching
component in the second orientation; and where the rotatable and sheet latching
components exhibit an attractive force based on a first gradient field; and where
a distal end of the gradient field stylus exhibits an attractive force with the
rotatable latching components based on a second gradient field.
