A production organizing method and a method and apparatus for assembling vehicle body are provided. According to an aspect, the sample tray includes wells that can be accessed by a sample arm along a common arc of rotation, without moving the sample arm in and out. When the analysis reveals that one or more test features are present, embedding of watermarks in at least the first portion of the received content is disabled. One such arrangement produces a suspension of progressive construction that enables the seat to handle a wide range of shocks, bumps, jolts, and vibration of varying frequencies and magnitudes. User controls are also provided to adjust the volume and frequency or pitch of the generated sounds. The TFT comprises a source and a drain.