A composition is provided comprising a plant sterol and a soy protein material andor and isoflavone selected from genistein, daidzein, glycitein, biochanin A, formononetin, and their naturally occurring glycosides, where the plant sterol comprises at least 0. The legrest assembly also includes a legrest diaphragm mounted for pivotal movement in relation to the seat bottom and a legrest extension diaphragm telescoped within the legrest diaphragm for being selectively extended and retracted relative to the legrest diaphragm to provide an appropriate length leg support for the passenger. If the magnitude of the desired voltage command falls between the first value and the second value, then modulating a voltage command between the first and the second value over a determined sample period, thereby resulting in the application of a modulated voltage command to the motor. In the cleaning process, the inside of the processing chamber is cleaned with a plasma of an oxygen gas and a hydrogen gas. A target planarizing time is then determined as a function of the target thickness reduction and the material removal rate. Responsive to receiving a request to create a placeholder for a reusable artifact representing a reusable unit, the placeholder for an appropriate version of the reusable artifact is created within a container and a first parameter identifying the reusable artifact is assigned to an artifact property of the placeholder.