A radar system and method use a radar FMCW chirp having variable chirp characteristics. An HSVLI indicates a piece or collection of content and may be hierarchically structured, comprising contiguous components ordered from a most general level to a most specific level. Additionally, the consumer can request e-mail be forwarded to friends or other acquaintances. Operation between the host device and the client device can be facilitated through a communication protocol, such as the universal serial bus protocol. The edge portion has at least a partially exposed edge surface extending substantially linearly from the inner lens surface toward the outer lens surface coextensively with at least a major portion of the lens thickness at a location adjacent to the edge portion, and at a predetermined inclination with respect to a portion of the lens surface at such location.