Abstract: In some examples, a system receives a representation of a lattice cell and information representing a target modified behavior of the lattice cell. The representation of the lattice cell including an arrangement of beams of the lattice cell. The system generates a modified lattice cell based on the representation of the lattice cell and the information, where the modified lattice cell includes the arrangement of the beams and an added behavior adjustment structure that is connected to a selected beam of the arrangement of the beams.

Abstract: An embodiment of a media movement apparatus is used to detect an edge of a unit of media in a media path in an inkjet printer using an optical sensor. When the inkjet printer is operating in a mode in which units of media are continuously moved into the media path, a mechanical sensor will not reliably allow detection of the leading edge of a unit of media. Determining the location of the leading edge of the unit of media is done to correctly place an image on the unit of the media. After ejecting the previous unit of the media into an output tray, the current unit of the media is moved backward in the media path while measuring the output of an optical sensor. If the edge is detected while moving backward, the current unit of the media is moved to the input side of a print zone. If the edge is not detected and the optical sensor indicates the presence of media, a media jam is indicated.