A liquid crystal device includes a first polarization grating, a second polarization grating, and a liquid crystal layer. The first shell has a plurality of first through holes serving as supply paths for a gas. The main email component provides an underlying graphical user interface for functions directly associated with the storage and transfer of electronic mail messages and also handles all data bundling and unbundling that may be required to transform a message created by an authoring component into a fully MIME compliant message.