Techniques are described for managing program execution capacity, such as for a group of computing nodes that are provided for executing one or more programs for a user. The methodology and apparatus taught herein also enable email software to automatically display a message utilizing the proper character set or sets. The controller includes an additional sensor to sense light from the LEDs over a relatively restricted range of controller motion, and use this sensed light to dynamically calibrate the controller when the controller passes through the restricted range of motion over which the sensor senses the light. The invention is particularly convenient, because the solid detergent reservoir is constructed as a modular unit easily separable from the housing. The shells of completion equipment that is required to withstand the rigorous conditions in such wells are increased in strength by laminate layers that are formed of materials having higher yield strength than the yield strength of materials that can be used in well fluids. The method comprises the step of administering to the mammal a compound that inhibits the synthesis or activity of peripheral serotonin, including a Tph1 inhibitor or a serotonin receptor inhibitor.