This invention provides compounds of Formula or :that are useful in the treatment or inhibition of LXR mediated diseases. The tape measure has a housing within which is positioned a spring-biased tape assembly, the drive mechanism and a clutch. An encoding part generates the systematic bits and parity bits and maps them to the packets in accordance with the IR parameters. The hollow needle, when ready for use, extends through said check valve, and the check valve automatically closes once the needle is withdrawn. The present invention also discloses techniques for enhancing the signal-to-noise ratio of image data received from the optical inspection system.