A belt sander is disclosed that may include a sanding assembly having a first roller and a second roller, the sanding assembly being configured to receive a sanding belt around the first roller and the second roller to define a sanding surface therebetween. Input data is processed according to a data parser description associated with the input data format, and output data is generated based on the processing. The control and patient data are displayed on a display device via a second controller connected to the second signal transmission apparatus. An Identifier of a user access request of the unauthorized user is checked in the exception list. The information includes video content selected by a user of a particular set-top box corresponding to one of the one or more on-line members, where the video content is concurrently sent to the particular set-top box device. In embodiments, such as \u03b13 or \u03b12 or \u03b12\u03b13 GABAergic receptor subtype selective ligands lack ester linkages and may be thus relatively insensitive to hydrolysis by esterases.