Silicon carbide single crystal is prepared. The user interface focuses information displayed by the interface by automatically adjusting the content displayed by each strip based on a user selection in any one strip. An upstream proxy parses the web page to determine an object embedded in the web page, wherein a promise list is generated specifying the embedded object that is to be pre-fetched according to a criterion. When ice is used in conjunction with a cooler, it melts and forms standing water. Once the grid nodes are configured, and one or more grid masters are established, the resource grid is ready for regular operation. The load beam includes a central rail structure extending along at least a part of the longitudinal axis.